All Java Aplet Actions With An Example In A Action programme

import java.applet.Applet;

import java.awt.Button;

import java.awt.Color;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.Label;

import java.awt.List;

import java.awt.TextField;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.net.URL;

import java.util.concurrent.Executors;




import javax.swing.JButton;







public class action extends Applet implements ActionListener

{




int r, g, b, x, y;

Label l1, l2, l3, l4, l5,l6,l7;

TextField t1, t2, t3, t4, t5, t6,t7,t8;

JButton jb;

Button b1, b2, b3, b4 ,b5, b6, b7, b8,b9,b10,b11,b12,b13,b14,b15;

List L;

public void init()

{



r=g=b=0;

x=800;

y=200;

setLayout(null);

L=new List(5,false);

add(L);

L.add("No. 1");

L.add("No. 2");

L.add("No. 3");

L.add("No. 4");

L.add("No. 5");

L.addActionListener(this);

l5 = new Label("Password");

l1 = new Label("Enter p");

l2 = new Label("Enter r");

l4 = new Label("Enter t");

l3 = new Label("Click On Calculate ");

l6 = new Label("www.");

l7 = new Label(".com");

t1 = new TextField();

t2 = new TextField();

t3 = new TextField();

t4 = new TextField();

t5 = new TextField();

t6 = new TextField();

t7 = new TextField();

t8 = new TextField();

t5.setEchoChar('*');



jb = new JButton("GOOGLE");

b1 = new Button(" Calculate ");

b2 = new Button(" RED ");

b3 = new Button(" Blue ");

b4 = new Button(" Green ");

b5 = new Button("Show");

b6 = new Button("BACKGROUND BRIGHTER");

b7 = new Button("Clockwise");

b8 = new Button("Anticlockwise");

b9 = new Button("Reset");

b10 = new Button("Count");

b11 = new Button("Add");

b12 = new Button("Remove");

b13=new Button("google");

b14=new Button("Notepad");

b15=new Button("GO");

add(jb);

add(b14);

add(t8);

add(b15);

add(l1);

add(t1);

add(l2);

add(t2);

add(l4);

add(l6);

add(l7);

add(t4);

add(l3);

add(b1);

add(t3);

add(b2);

add(b3);

add(b4);

add(l5);

add(t5);

add(b5);

add(t6);

add(b6);

add(b7);

add(b8);

add(b9);

add(b10);

add(b11);

add(b12);

add(t7);

add(b13);

jb.setBounds(800, 30, 100, 20);

b1.setBounds(20,490,100,20);

b2.setBounds(130,490,100,20);

b3.setBounds(240,490,100,20);

b4.setBounds(350,490,100,20);

L.setBounds(10,180,100,100);

l1.setBounds(20,20,100,20);

l2.setBounds(20,50,100,20);

l4.setBounds(20,90,100,20);

l3.setBounds(20,130,100,20);

t1.setBounds(140,20,100,20);

t2.setBounds(140,50,100,20);

t4.setBounds(140,90,100,20);

t3.setBounds(140,130,100,20);

l5.setBounds(500, 20, 100, 20);

t5.setBounds(600, 20, 100, 20);

b5.setBounds(500, 50, 100, 20);

t6.setBounds(600, 50, 100, 20);

b6.setBounds(500, 90, 200, 20);

b8.setBounds(700, 550, 100, 20);

b9.setBounds(800, 550, 100, 20);

b7.setBounds(900, 550, 100, 20);

b10.setBounds(140, 300, 100, 20);

b11.setBounds(140, 330, 100, 20);

b12.setBounds(140, 360, 100, 20);

t7.setBounds(10, 310, 100, 20);

b13.setBounds(400, 20, 100, 20);

b14.setBounds(400, 50, 100, 20);

t8.setBounds(430, 400, 100, 20);

b15.setBounds(710, 400, 20, 20);

l6.setBounds(400, 400, 30, 20);

l7.setBounds(540, 400, 30, 20);

l1.setBackground(Color.RED);

l1.setForeground(Color.BLUE);

l2.setBackground(Color.RED);

l2.setForeground(Color.BLUE);

l3.setBackground(Color.RED);

l3.setForeground(Color.BLUE);

l4.setBackground(Color.RED);

l4.setForeground(Color.BLUE);

b1.setBackground(Color.RED);

b1.setForeground(Color.BLUE);

b2.setBackground(Color.RED);

b3.setBackground(Color.blue);

b4.setBackground(Color.green);

b5.setBackground(Color.green);

b6.setBackground(Color.ORANGE);

b13.setBackground(Color.blue);

//setBackground(Color.yellow);

b1.addActionListener(this);

b2.addActionListener(this);

b3.addActionListener(this);

b4.addActionListener(this);

b5.addActionListener(this);

b6.addActionListener(this);

b7.addActionListener(this);

b8.addActionListener(this);

b9.addActionListener(this);

b10.addActionListener(this);

b11.addActionListener(this);

b12.addActionListener(this);

b13.addActionListener(this);

b14.addActionListener(this);

b15.addActionListener(this);

jb.addActionListener(this);



// URL u=getDocumentBase();

// Image i=getImage(u, "file:///E:/New%20folder/428817_329971110429317_670594489_n.jpg");




b4.setVisible(false);

}





public void actionPerformed(ActionEvent e)

{



if(e.getSource()==b1)

{

int a=Integer.parseInt(t1.getText());

int b=Integer.parseInt(t2.getText());

int d=Integer.parseInt(t4.getText());

int c=(a*b*d)/100;

String s=String.valueOf(c);

t3.setText(s);



}

if(e.getSource()==b2)

{

setBackground(Color.RED);

b4.setVisible(true);

b2.setVisible(false);

}

if(e.getSource()==b3)

{

setBackground(Color.blue);

b2.setVisible(true);

b4.setVisible(false);

}

if(e.getSource()==b4)

{

setBackground(Color.green);

}

if(e.getSource()==b5)

{

String p=(t5.getText());



t6.setText(p);

}

if(e.getSource()==b6)

{

r=r+10;

g=g+10;

b=b+10;



Color c=new Color(r, g, b);

setBackground(c);

}

if(e.getSource()==b7 && y<=490)

{

x=x+10;

y=y+10;

}

if(e.getSource()==b8 && y<=490)

{

x=x-10;

y=y+10;

}

if(e.getSource()==b9)

{

x=800;

y=200;

}

if(e.getSource()==b10)

{

int c1=L.getItemCount();

String c2=String.valueOf(c1);

t7.setText(c2);

}

if(e.getSource()==b11)

{

String s1=t7.getText();

L.add(s1);

}

if(e.getSource()==b12)

{

String s1=t7.getText();

L.remove(s1);

}

if(e.getSource()==b13)

{

try

{





String[] args = {"cmd","/c","start","www.google.co.in"};

//Runtime rt = Runtime.getRuntime();

//ProcessBuilder pb = new ProcessBuilder(args);

//Process pr = pb.start();

Process p=Runtime.getRuntime().exec(args);

}

catch (Exception ee)

{

System.out.println(ee.getMessage());



}

}

if(e.getSource()==b14)

{

try

{



Process q=Runtime.getRuntime().exec("notepad.exe");

}

catch (Exception ee)

{

System.out.println(ee.getMessage());



}

}

if(e.getSource()==b15)

{

try

{

String s2=t8.getText();

String s3="www."+s2+".com";



String[] args = {"cmd","/c","start",s3};

//Runtime rt = Runtime.getRuntime();

ProcessBuilder pb = new ProcessBuilder(args);

Process pr = pb.start();

}

catch (Exception ee)

{

System.out.println(ee.getMessage());



}

}

if(e.getSource()==jb)

{

try

{





String[] args = {"cmd","/c","start","www.google.co.in"};

//Runtime rt = Runtime.getRuntime();

//ProcessBuilder pb = new ProcessBuilder(args);

//Process pr = pb.start();

Process p=Runtime.getRuntime().exec(args);

}

catch (Exception ee)

{

System.out.println(ee.getMessage());



}

}

repaint();

}

public void paint(Graphics g)

{

if(L.getSelectedIndex()==0)

{

setBackground(Color.yellow);

}

if(L.getSelectedItem()=="No. 2")

{

setBackground(Color.cyan);

}

if(L.getSelectedItem()=="No. 3")

{

setBackground(Color.BLUE);

}

if(L.getSelectedItem()=="No. 4")

{

setBackground(Color.gray);

}

if(L.getSelectedItem()=="No. 5")

{

setBackground(Color.green);

}




URL u=getDocumentBase();

Image i=getImage(u, "file:///E:/New%20folder/428817_329971110429317_670594489_n.jpg");




g.drawImage(i, 0, 0, 1350, 650, this);

g.drawLine(x, y, 800, 500);

}

}

marquee applet by sunil kumar dheendhwal

//================================================
// MarqueeApplet.java
// Auto-scrolling and dragging text on the screen
// Yannis Stavrakas, Jan '98
//================================================

import java.awt.*;
import java.applet.Applet;

public class MarqueeApplet extends Applet {
    int w, h;  //fixed applet width and height
    String message;
    MarqueeCanvas marquee;
    int mouseX;

//standard applet methods
    public void init() {
        //set html-file-dependent values
        w = Integer.parseInt(getParameter("width"));
        h = Integer.parseInt(getParameter("height"));
        message = getParameter("msg");
        setBackground(Color.white);
        marquee = new MarqueeCanvas(w, h);
    }
    public void start() {
        setLayout(new BorderLayout());
        add("Center", marquee);
        marquee.setMsg(message);
        marquee.initPos();
        marquee.move();
    }
    public void stop() {
        marquee.hold();
        remove(marquee);
    }
    public void destroy() {
    }
    String[][] parameterInfo = {
        {"width", "int", "the applet width"},
        {"height", "int", "the applet height"},
        {"msg", "String", "the marquee message"}
    };

//additional behaviour methods
    public boolean handleEvent (Event evt) {
        switch (evt.id) {
        case Event.MOUSE_DOWN:
            mouseX = evt.x;
            return true;
        case Event.MOUSE_UP:  //change scrolling direction
            if (evt.x == mouseX) {
                marquee.hold();
            }
            else if (evt.x < mouseX) {
                marquee.goLeft(true);
                marquee.move();
            }
            else {  //if (evt.x > mouseX)
                marquee.goLeft(false);
                marquee.move();
            }
            return true;
        }
        return super.handleEvent(evt);
    }
}

//======================================================
// Marquee msg with scrolling & dragging capabilities
// REDUCED CLASS VERSION FOR MINIMAL APPLET SIZE
//======================================================
class MarqueeCanvas extends Canvas implements Runnable {
    //marquee message
    boolean isPicture;  //marquee message is picture or text?
    Image picture;
    String text;
    Font font;
    Color color;
    //marquee dimensions
    int w;
    int h;
    //offscreen marquee image
    Image im = null;
    int imWidth = 0;
    int imHeight = 0;
    Insets insets = new Insets(2, 2, 2, 2);
    //position of image relative to canvas viewport
    int viewX = 0;
    int viewY = 0;
    //mouse X coord while draging
    int mouseX;
    //thread used as a timer for scrolling image
    Thread timerThread = null;
    boolean tempStop = false;  //class stops thread
    boolean stopped = true;    //user stops thread
    //scrolling parameters
    boolean toLeft = true;
    int advance = 1;
    int interval = 10;
    //coords of rectangle to be erased
    int dirtyX = 0;
    int dirtyY = 0;
    int dirtyW = 0;
    int dirtyH = 0;
    //component readiness to create image
    boolean ready = false;
    //draw component borders or not
    boolean borders = false;

//constructors
    public MarqueeCanvas(int w, int h) {
        this.w = w;
        this.h = h;
        //default marquee message attributes
        isPicture = false;
        picture = null;
        text = "";
        font = new Font("Helvetica", Font.BOLD, 12);
        color = Color.red;

        resize(w, h);
    }

//marquee message methods
    public void setMsg(String text) {
        if (timerThread!=null) {
            tempStop = true;
            startTimerThread(false);
        }
        dirtyRect(viewX, viewY, imWidth, imHeight);
        isPicture = false;
        this.picture = null;
        this.text = text;
        makeImage(this.text);
        repaint();
        if (tempStop) {
            tempStop = false;
            startTimerThread(true);
        }
    }

//scrolling parameter methods
    public void goLeft(boolean toLeft) {
        if (timerThread!=null) {
            tempStop = true;
            startTimerThread(false);
        }
        this.toLeft = toLeft;
        if (tempStop) {
            tempStop = false;
            startTimerThread(true);
        }
    }

//image positioning methods (relative to canvas)
    public void initPos() {
        initX();
        initY();
    }
    public void initX() {
        if (timerThread!=null) {
            tempStop = true;
            startTimerThread(false);
        }
        dirtyRect(viewX, viewY, imWidth, imHeight);
        viewX = toLeft? w-1: -(imWidth-1);       //to the edge
        repaint();
        if (tempStop) {
            tempStop = false;
            startTimerThread(true);
        }
    }
    public void initY() {
        if (timerThread!=null) {
            tempStop = true;
            startTimerThread(false);
        }
        dirtyRect(viewX, viewY, imWidth, imHeight);
        viewY = (int)Math.round((h - imHeight) / 2);  //center
        repaint();
        if (tempStop) {
            tempStop = false;
            startTimerThread(true);
        }
    }

//scrolling movement methods
    public void move() {
        startTimerThread(true);
        stopped = false;
    }
    public void hold() {
        startTimerThread(false);
        stopped = true;
    }

//standard overriden methods
    public void paint(Graphics g) {
        g.clearRect(dirtyX, dirtyY, dirtyW, dirtyH);
        resetDirtyRect();
        if (im != null) {
            g.drawImage(im, viewX, viewY, this);
        }
        if (borders) {
            g.drawRect(0, 0, w-1, h-1);
        }
    }
    public void update(Graphics g) {
        paint(g);  //this, with dirtyRect, gives smooth movement
    }
    public boolean handleEvent (Event evt) {
        Component theFrame;  //the father of all
        switch (evt.id) {
        case Event.MOUSE_ENTER:
            theFrame = getParent();
            while (theFrame.getParent() != null)
                theFrame = theFrame.getParent();
            ((Frame)theFrame).setCursor(Frame.W_RESIZE_CURSOR);
            return false;  //allow parent to get the message too
        case Event.MOUSE_EXIT:
            theFrame = getParent();
            while (theFrame.getParent() != null)
                theFrame = theFrame.getParent();
            ((Frame)theFrame).setCursor(Frame.DEFAULT_CURSOR);
            return false;
        case Event.MOUSE_DOWN:
            if (timerThread!=null) {
                tempStop = true;
                startTimerThread(false);
            }
            mouseX = evt.x;
            return false;
        case Event.MOUSE_DRAG:
            dirtyRect(viewX, viewY, imWidth, imHeight);
            viewX += evt.x - mouseX;
            mouseX = evt.x;
            if (viewX < -(imWidth-1)) viewX = -(imWidth-1);
            if (viewX > w-1) viewX = w-1;
            repaint();
            return false;
        case Event.MOUSE_UP:
            if (tempStop) {
                tempStop = false;
                startTimerThread(true);
            }
            return false;
        }
        return super.handleEvent(evt);
    }

//thread methods
    public void run() {
        while (timerThread == Thread.currentThread()) {
            if (toLeft) {
                dirtyRect(viewX+imWidth-advance, viewY, advance, imHeight);
                viewX -= advance;
                if (viewX < -(imWidth-1)) viewX = w-1;
            }
            else {
                dirtyRect(viewX, viewY, advance, imHeight);
                viewX += advance;
                if (viewX > w-1) viewX = -(imWidth-1);
            }
            repaint();
            try { Thread.sleep(interval); }
            catch (Exception e) {};
        }
    }
    void startTimerThread(boolean start) {
        if (start) {
            timerThread = new Thread(this);
            timerThread.start();
        }
        else {
            timerThread = null;
        }
    }

//create image with marquee message
    void makeImage(String text) {
        if ( ! ready) return;
        FontMetrics fm = getFontMetrics(font);
        imWidth = fm.stringWidth(text) + insets.left + insets.right;
        imHeight = fm.getHeight() + insets.top + insets.bottom;
        im = createImage(imWidth, imHeight);

        Graphics imGraph = im.getGraphics();
        imGraph.setColor(color);
        imGraph.setFont(font);
        int fontDescent = fm.getDescent();
        imGraph.drawString(text, insets.left, imHeight-fontDescent-insets.bottom);
        if (borders) {
            imGraph.drawRect(0, 0, imWidth-1, imHeight-1);
        }
        imGraph.dispose();
    }

//sets coords for dirty rectangle
    void dirtyRect(int x, int y, int w, int h) {
        //if first call after resetDirtyRect
        if (dirtyW == 0 || dirtyH == 0) {
            dirtyX = x;
            dirtyY = y;
            dirtyW = w;
            dirtyH = h;
            return;
        }
        //else calculate the bounding rect
        int minX = x < dirtyX? x: dirtyX;
        int maxX = x+w > dirtyX+dirtyW? x+w: dirtyX+dirtyW;
        int minY = y < dirtyY? y: dirtyY;
        int maxY = y+h > dirtyY+dirtyH? y+h: dirtyY+dirtyH;
        dirtyX = minX;
        dirtyY = minY;
        dirtyW = maxX - minX;
        dirtyH = maxY - minY;
    }
    void resetDirtyRect() {
        dirtyW = 0;
        dirtyH = 0;
    }

//overriden method, called by system
    public void addNotify() {
        super.addNotify();
        ready = true;  //green light to create image
    }
}

buffring marquee

import java.applet.*;          // involve applet packages
import java.awt.*;

public class Marquee extends Applet {
   private Image buffer;       // buffer and bufferg are
   private Graphics bufferg;   // used for double fuffering
   private int width;          // applet's wodth
   private int height;         // applet's height
   private String text;        // text for scrolling
   private int x;              // aux variable

   public void init() {        // initialization
      text = getParameter("text"); // get text
      setBackground(new Color(230,230,130));  // set bgcolor
      width = getSize().width;     // get applet's width
      height = getSize().height;   // set applet's height
      buffer = createImage(width, height); // create buffers
      bufferg = buffer.getGraphics();  // for double buffering
      x = width;
   }

   public void update(Graphics g) { //overwrites standard update
      paint(g);
   }

   public void paint(Graphics g) {  // all applet output is here
      bufferg.setColor(getBackground()); // set bgcolor 
      bufferg.fillRect(0, 0, width, height); // clean off-screen buffer
      bufferg.setColor(Color.red);       // set text color
      bufferg.drawString(text, x, 10);   // draw text at (x, y)
      g.drawImage(buffer, 0, 0, this);   // swap the buffers

      if (x < -bufferg.getFontMetrics().stringWidth(text))
         x = width;                      // next string position
      else                               // for drawing
         x = x - 1;

      try {Thread.sleep(30);}            // start animation
      catch(InterruptedException e){}

      repaint();                         // update the buffers
   }
}

MARQUEE IN JAVA APPLET NEW VERSION

Marquee applet source code

//================================================
// MarqueeApplet.java
// Auto-scrolling and dragging text on the screen
// Yannis Stavrakas, Jan '98
//================================================

import java.awt.*;
import java.applet.Applet;

public class MarqueeApplet extends Applet {
    int w, h;  //fixed applet width and height
    String message;
    MarqueeCanvas marquee;
    int mouseX;

//standard applet methods
    public void init() {
        //set html-file-dependent values
        w = Integer.parseInt(getParameter("width"));
        h = Integer.parseInt(getParameter("height"));
        message = getParameter("msg");
        setBackground(Color.white);
        marquee = new MarqueeCanvas(w, h);
    }
    public void start() {
        setLayout(new BorderLayout());
        add("Center", marquee);
        marquee.setMsg(message);
        marquee.initPos();
        marquee.move();
    }
    public void stop() {
        marquee.hold();
        remove(marquee);
    }
    public void destroy() {
    }
    String[][] parameterInfo = {
        {"width", "int", "the applet width"},
        {"height", "int", "the applet height"},
        {"msg", "String", "the marquee message"}
    };

//additional behaviour methods
    public boolean handleEvent (Event evt) {
        switch (evt.id) {
        case Event.MOUSE_DOWN:
            mouseX = evt.x;
            return true;
        case Event.MOUSE_UP:  //change scrolling direction
            if (evt.x == mouseX) {
                marquee.hold();
            }
            else if (evt.x < mouseX) {
                marquee.goLeft(true);
                marquee.move();
            }
            else {  //if (evt.x > mouseX)
                marquee.goLeft(false);
                marquee.move();
            }
            return true;
        }
        return super.handleEvent(evt);
    }
}

//======================================================
// Marquee msg with scrolling & dragging capabilities
// REDUCED CLASS VERSION FOR MINIMAL APPLET SIZE
//======================================================
class MarqueeCanvas extends Canvas implements Runnable {
    //marquee message
    boolean isPicture;  //marquee message is picture or text?
    Image picture;
    String text;
    Font font;
    Color color;
    //marquee dimensions
    int w;
    int h;
    //offscreen marquee image
    Image im = null;
    int imWidth = 0;
    int imHeight = 0;
    Insets insets = new Insets(2, 2, 2, 2);
    //position of image relative to canvas viewport
    int viewX = 0;
    int viewY = 0;
    //mouse X coord while draging
    int mouseX;
    //thread used as a timer for scrolling image
    Thread timerThread = null;
    boolean tempStop = false;  //class stops thread
    boolean stopped = true;    //user stops thread
    //scrolling parameters
    boolean toLeft = true;
    int advance = 1;
    int interval = 10;
    //coords of rectangle to be erased
    int dirtyX = 0;
    int dirtyY = 0;
    int dirtyW = 0;
    int dirtyH = 0;
    //component readiness to create image
    boolean ready = false;
    //draw component borders or not
    boolean borders = false;

//constructors
    public MarqueeCanvas(int w, int h) {
        this.w = w;
        this.h = h;
        //default marquee message attributes
        isPicture = false;
        picture = null;
        text = "";
        font = new Font("Helvetica", Font.BOLD, 12);
        color = Color.red;

        resize(w, h);
    }

//marquee message methods
    public void setMsg(String text) {
        if (timerThread!=null) {
            tempStop = true;
            startTimerThread(false);
        }
        dirtyRect(viewX, viewY, imWidth, imHeight);
        isPicture = false;
        this.picture = null;
        this.text = text;
        makeImage(this.text);
        repaint();
        if (tempStop) {
            tempStop = false;
            startTimerThread(true);
        }
    }

//scrolling parameter methods
    public void goLeft(boolean toLeft) {
        if (timerThread!=null) {
            tempStop = true;
            startTimerThread(false);
        }
        this.toLeft = toLeft;
        if (tempStop) {
            tempStop = false;
            startTimerThread(true);
        }
    }

//image positioning methods (relative to canvas)
    public void initPos() {
        initX();
        initY();
    }
    public void initX() {
        if (timerThread!=null) {
            tempStop = true;
            startTimerThread(false);
        }
        dirtyRect(viewX, viewY, imWidth, imHeight);
        viewX = toLeft? w-1: -(imWidth-1);       //to the edge
        repaint();
        if (tempStop) {
            tempStop = false;
            startTimerThread(true);
        }
    }
    public void initY() {
        if (timerThread!=null) {
            tempStop = true;
            startTimerThread(false);
        }
        dirtyRect(viewX, viewY, imWidth, imHeight);
        viewY = (int)Math.round((h - imHeight) / 2);  //center
        repaint();
        if (tempStop) {
            tempStop = false;
            startTimerThread(true);
        }
    }

//scrolling movement methods
    public void move() {
        startTimerThread(true);
        stopped = false;
    }
    public void hold() {
        startTimerThread(false);
        stopped = true;
    }

//standard overriden methods
    public void paint(Graphics g) {
        g.clearRect(dirtyX, dirtyY, dirtyW, dirtyH);
        resetDirtyRect();
        if (im != null) {
            g.drawImage(im, viewX, viewY, this);
        }
        if (borders) {
            g.drawRect(0, 0, w-1, h-1);
        }
    }
    public void update(Graphics g) {
        paint(g);  //this, with dirtyRect, gives smooth movement
    }
    public boolean handleEvent (Event evt) {
        Component theFrame;  //the father of all
        switch (evt.id) {
        case Event.MOUSE_ENTER:
            theFrame = getParent();
            while (theFrame.getParent() != null)
                theFrame = theFrame.getParent();
            ((Frame)theFrame).setCursor(Frame.W_RESIZE_CURSOR);
            return false;  //allow parent to get the message too
        case Event.MOUSE_EXIT:
            theFrame = getParent();
            while (theFrame.getParent() != null)
                theFrame = theFrame.getParent();
            ((Frame)theFrame).setCursor(Frame.DEFAULT_CURSOR);
            return false;
        case Event.MOUSE_DOWN:
            if (timerThread!=null) {
                tempStop = true;
                startTimerThread(false);
            }
            mouseX = evt.x;
            return false;
        case Event.MOUSE_DRAG:
            dirtyRect(viewX, viewY, imWidth, imHeight);
            viewX += evt.x - mouseX;
            mouseX = evt.x;
            if (viewX < -(imWidth-1)) viewX = -(imWidth-1);
            if (viewX > w-1) viewX = w-1;
            repaint();
            return false;
        case Event.MOUSE_UP:
            if (tempStop) {
                tempStop = false;
                startTimerThread(true);
            }
            return false;
        }
        return super.handleEvent(evt);
    }

//thread methods
    public void run() {
        while (timerThread == Thread.currentThread()) {
            if (toLeft) {
                dirtyRect(viewX+imWidth-advance, viewY, advance, imHeight);
                viewX -= advance;
                if (viewX < -(imWidth-1)) viewX = w-1;
            }
            else {
                dirtyRect(viewX, viewY, advance, imHeight);
                viewX += advance;
                if (viewX > w-1) viewX = -(imWidth-1);
            }
            repaint();
            try { Thread.sleep(interval); }
            catch (Exception e) {};
        }
    }
    void startTimerThread(boolean start) {
        if (start) {
            timerThread = new Thread(this);
            timerThread.start();
        }
        else {
            timerThread = null;
        }
    }

//create image with marquee message
    void makeImage(String text) {
        if ( ! ready) return;
        FontMetrics fm = getFontMetrics(font);
        imWidth = fm.stringWidth(text) + insets.left + insets.right;
        imHeight = fm.getHeight() + insets.top + insets.bottom;
        im = createImage(imWidth, imHeight);

        Graphics imGraph = im.getGraphics();
        imGraph.setColor(color);
        imGraph.setFont(font);
        int fontDescent = fm.getDescent();
        imGraph.drawString(text, insets.left, imHeight-fontDescent-insets.bottom);
        if (borders) {
            imGraph.drawRect(0, 0, imWidth-1, imHeight-1);
        }
        imGraph.dispose();
    }

//sets coords for dirty rectangle
    void dirtyRect(int x, int y, int w, int h) {
        //if first call after resetDirtyRect
        if (dirtyW == 0 || dirtyH == 0) {
            dirtyX = x;
            dirtyY = y;
            dirtyW = w;
            dirtyH = h;
            return;
        }
        //else calculate the bounding rect
        int minX = x < dirtyX? x: dirtyX;
        int maxX = x+w > dirtyX+dirtyW? x+w: dirtyX+dirtyW;
        int minY = y < dirtyY? y: dirtyY;
        int maxY = y+h > dirtyY+dirtyH? y+h: dirtyY+dirtyH;
        dirtyX = minX;
        dirtyY = minY;
        dirtyW = maxX - minX;
        dirtyH = maxY - minY;
    }
    void resetDirtyRect() {
        dirtyW = 0;
        dirtyH = 0;
    }

//overriden method, called by system
    public void addNotify() {
        super.addNotify();
        ready = true;  //green light to create image
    }
}

marquee in java applet

/* import the java.applet class (necessary for all applets) */

import java.applet.*;

/* import the java.awt (Abstract Windows Toolkit) classes */

import java.awt.*;

/* declare a class Marquee that can use all variables and functions
   from the Applet class.  The Runnable interface is needed to 
   provide functions that will allow for the execution of the
   applet; the Runnable function used here is run(). */

public class Marquee extends Applet implements Runnable {

/* define a Thread, t.  Think of a Thread as a process; it can be
   started and stopped as necessary within the code. */

  Thread t;

/* define a String, msg, to hold the text we wish to scroll */

  String msg = "Welcome to the Wonderful World of JAVA!";

/* define an integer, msgWidth, to hold the length of the string
   in pixels. */

  int msgWidth;

/* define an integer, pos, to hold the current X position of the 
  text. */

  int pos;

/* define an integer, yLoc, to hold the Y position of the text. */ 

  int yLoc = 15;

/* init is the first function called in a Java applet. */

public void init()
  {

/* resize the applet window to 400x20 */

    resize(400, 20);

/* set the Background color of the applet to white in the form 
   (Red, Green, Blue) with integer values ranging from 0-255. */

    setBackground(new Color(255, 255, 255));

/* use the getFontMetrics function to get the width of the 
   string, in pixels. */
    
    msgWidth = getFontMetrics(getFont()).stringWidth(msg);

/* set the intital position of the text to the right side of 
   the applet window. */
    
    pos = size().width;

/* set t to be a new Thread within 'this,' the Marquee class. */
    
    t = new Thread(this);

/* start the thread.  This calls the run() function. */
    
    t.start();
  }


/* the paint function is called whenever the window needs
   to be updated; the repaint() statement also calls this
   function.  Here, we use it to draw the msg string at
   the coordinates specified by the pos and yLoc variables. */

public void paint(Graphics g)
  {
    g.drawString(msg, pos, yLoc);
  }


/* t.start() calls the run() function.  Here, the while loop
   will iterate continuously; each iteration will repaint the
   applet (drawing the string five pixels to the left of its
   previous location), and pause for 100 milliseconds.  If the
   complete string has scrolled off to the left side of the applet 
   window (pos <= -msgWidth), reposition the string to the 
   right side of the applet window. */


  public void run()
  {
    while(true)
    {
      repaint();
      pos -= 5;
      try
      {
        t.sleep(100);
      }
      catch(Exception e)
      {
      }
      if (pos <= -msgWidth)
      {
        pos = size().width;
      }
    }
  }
}

Bring a Image In Java Applet Programme

import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Image;
import java.net.URL;


public class im1 extends Applet
{

/**
*
*/
private static final long serialVersionUID = 1L;

public void paint(Graphics g)
{
URL u=getDocumentBase();
Image i=getImage(u, "freedocru476121280x1024to5.jpg ");

g.drawImage(i, 10, 10, 200, 300, this);

}
}

MAKE ANY APPLET LAYOUT

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/*
<applet code="layout.java" width=500 height=500>
</applet>
*/
public class layout extends Applet implements ActionListener
{
        Button b1,b2,b3,b4,b5,b6,b7,b8;
        public void init()
        {
                setLayout(new FlowLayout(FlowLayout.CENTER));
                b1=new Button("red");
                b2=new Button("cyan");
                b3=new Button("pink");
                b4=new Button("yellow");
                b5=new Button("magenta");
                b6=new Button("black");
                b7=new Button("blue");
                b8=new Button("orange");

                add(b1);
                add(b2);
                add(b3);
                add(b4);
                add(b5);
                add(b6);
                add(b7);
                add(b8);

                b1.addActionListener(this);
                b2.addActionListener(this);
                b3.addActionListener(this);
                b4.addActionListener(this);
                b5.addActionListener(this);
                b6.addActionListener(this);
                b7.addActionListener(this);
                b8.addActionListener(this);


        }
        public void actionPerformed(ActionEvent ae)
        {
                String s=ae.getActionCommand();
                if(s.equals("red"))
                setBackground(Color.red);
                if(s.equals("cyan"))
                setBackground(Color.cyan);
                if(s.equals("pink"))
                setBackground(Color.pink);
                if(s.equals("yellow"))
                setBackground(Color.yellow);
                if(s.equals("magenta"))
                setBackground(Color.magenta);
                if(s.equals("black"))
                setBackground(Color.black);
                if(s.equals("blue"))
                setBackground(Color.blue);
                if(s.equals("orange"))
                setBackground(Color.orange);

                repaint();


        }
}

How to find some of digits of any given number

How to find some of digits of any given number

import java.util.*;
class A
{
int a,n,b,z,c=0;

void get()
{
Scanner sc=new Scanner(System.in);
System.out.print("Enter any number ");
n=sc.nextInt();
z=n;
}
void put()
{
while(n!=0)
{
a=n%10;
b=n/10;
n=b;

c=c+a;
}
System.out.print("number is "+z+"sum of all digits is "+c);
}


public static void main(String[] args)
{
A a=new A();
a.get();
a.put();

}}

Fectorial of a number in java

Fectorial of a number

import java.util.*;
class A
{
int a,i,f=1;

void get()
{
Scanner sc=new Scanner(System.in);
System.out.print("Enter the Value of a ");
a=sc.nextInt();
}
void put()
{
for(i=1;i<=a;i++)
{
f=f*i;
}
System.out.print("Fectorial Of "+a+" is "+f);
}

public static void main(String[] args)
{
A a=new A();
a.get();
a.put();

}}

How to find some of three numbers in java

find three numbers sum 

import java.util.*;

class A

{

int a,b,c,d;

void get()

{

Scanner sc=new Scanner(System.in);

System.out.print("Enter the Value of a ");

a=sc.nextInt();

System.out.print("Enter the Value of b ");

b=sc.nextInt();

System.out.print("Enter the Value of c ");

c=sc.nextInt();

}

void put()

{

d=a+b+c;

System.out.print("Sum Of a+b+c is = "+d);

}

public static void main(String[] args)

{

A a=new A();

a.get();

a.put();

}}

SIMPLE PROGRAMME OF JAVA

import java.util.*;

class A

{

int i;

void hello()

{

for(i=1;i<=5;i++)

{

System.out.print("======");

}

}

public static void main(String[] args)

{

A a=new A();

a.hello();

System.out.print("\nHello\n");

a.hello();

System.out.print("\nWELCOME TO SESSION OF JAVA\n");

a.hello();

System.out.print("\nHAVE A NICE SESSION\n");

a.hello();

System.out.print("\nSUCCESSFUL\n");

a.hello();

System.out.print("\nSUCCESSFUL  SUCCESSFUL\n");

a.hello();

System.out.print("\nHAVE A NICE YEAR\n");

a.hello();

System.out.print("\nHAVE A NICE DAY\n");

a.hello();

System.out.print("\nLEARN JAVA CAREFULLY\n");

a.hello();

System.out.print("\nBE CAREFULL\n");

a.hello();

System.out.print("\nWELCOME TO HAVEN WORLD\n");

a.hello();

System.out.print("\nHOPE YOU ENJOY\n");

a.hello();

System.out.print("\nTHANK YOU\n");

a.hello();

}}

DEFINATION OF SOME JAVA CLASSES

If this is your first encounter with object-oriented programming, a lot of the information in this lesson is going to seem really theoretical and overwhelming. Fear not-the further along in this book you get, and the more Java classes and applications you create, the easier it is to understand.
One of the biggest hurdles of object-oriented programming is not necessarily the concepts; it's their names. OOP has lots of jargon surrounding it. To summarize today's material, here's a glossary of terms and concepts you learned today:

class:

 A template for an object, which contains variables and methods representing behavior and attributes. Classes can inherit variables and methods from other classes.

class method:

A method defined in a class, which operates on the class itself and can be called via the class or any of its instances.
class variable:A variable that is "owned" by the class and all its instances as a whole and is stored in the class.

instance:
 The same thing as an object; each object is an instance of some class.
instance method:
A method defined in a class, which operates on an instance of that class. Instance methods are usually called just methods.
instance variable:
A variable that is owned by an individual instance and whose value is stored in the instance.
interface:
A collection of abstract behavior specifications that individual classes can then implement.
object:
A concrete instance of some class. Multiple objects that are instances of the same class have access to the same methods, but often have different values for their instance variables.
package:
A collection of classes and interfaces. Classes from packages other than java.lang must be explicitly imported or referred to by full package name.
subclass:
A class lower in the inheritance hierarchy than its parent, the superclass. When you create a new class, it's often called subclassing.
superclass:
A class further up in the inheritance hierarchy than its child, the subclass.

Java's Future And why Learn Java??

What's in store for Java in the future? A number of new developments have been brewing (pardon the pun):

• Sun is developing a number of new features for the Java environment, including a number of new class libraries for database integration, multimedia, electronic commerce, and other uses. Sun also has a Java-based Web server, a Java-based hardware chip (with which you can write Java-specific systems), and a Java-based operating system. You'll learn about all these things later in this book. The 1.1 release of the JDK will include many of these features; others will be released as separate packages.
• Sun is also developing a framework called Java Beans, which will allow the development of component objects in Java, similarly to Microsoft's ActiveX (OLE) tech-nology. These different components can then be easily combined and interact with each other using standard component assembly tools. You'll learn more about Java Beans later in this book.
• Java capabilities will be incorporated into a wide variety of operating systems, including Solaris, Windows 95, and MacOS. This means that Java applications (as opposed to applets) can run nearly anywhere without needing additional software to be installed.
• Many companies are working on performance enhancements for Java programs, including the aforementioned Java chip and what are called just-in-time compilers.

Why Learn Java?

At the moment, probably the most compelling reason to learn Java-and probably the reason you bought this book-is that applets are written in Java. Even if that were not the case, Java as a programming language has significant advantages over other languages and other environments that make it suitable for just about any programming task. This section describes some of those advantages.

Java Is Platform Independent

Platform independence-that is, the ability of a program to move easily from one computer system to another-is one of the most significant advantages that Java has over other programming languages, particularly if your software needs to run on many different platforms. If you're writing software for the World Wide Web, being able to run the same program on many different systems is crucial to that program's success. Java is platform independent at both the source and the binary level.

Java Is Object Oriented

To some, the object-oriented programming (OOP) technique is merely a way of organizing programs, and it can be accomplished using any language. Working with a real object-oriented language and programming environment, however, enables you to take full advantage of object-oriented methodology and its capabilities for creating flexible, modular programs and reusing code.

Java Is Easy to Learn

In addition to its portability and object orientation, one of Java's initial design goals was to be small and simple, and therefore easier to write, easier to compile, easier to debug, and, best of all, easy to learn. Keeping the language small also makes it more robust because there are fewer chances for programmers to make mistakes that are difficult to fix. Despite its size and simple design, however, Java still has a great deal of power and flexibility.

WHAT IS JAVA ????

Based on the enormous amount of press Java is getting and the amount

of excitement it has generated, you may get the impression that Java will 

save the world-or at least solve all the problems of the Internet. Not so. 

Java's hype has run far ahead of its capabilities, and while Java is indeed 

new and interesting, it really is another programming language with which 

you write programs that run on the Internet. In this respect, Java is closer 

to popular programming languages such as C, C++, Visual Basic, or Pascal,

than it is to a page description language such as HTML, 

or a very simple scripting language such as JavaScript.

More specifically, Java is an object-oriented programming language developed 

by Sun Microsystems, a company best known for its high-end UNIX workstations.

Modeled after C++, the Java language was designed to be small, simple, and 

portable across platforms and operating systems, both at the source and at the

binary level, which means that Java programs (applets and applications) can run

on any machine that has the Java virtual machine installed (you'll learn more about this later).

Java is usually mentioned in the context of the World Wide Web, where browsers

such as Netscape's Navigator and Microsoft's Internet Explorer claim to be "Java enabled." 

Java enabled means that the browser in question can download and play Java programs, 

called applets, on the reader's system. Applets appear in a Web page much the same way 

as images do, but unlike images, applets are dynamic and interactive. Applets can be used 

to create animation, figures, forms that immediately respond to input from the reader, games,

or other interactive effects on the same Web pages among the text and graphics.

WEL_COME to java Universe

Hey Dear Welcome To Java World

Here we made this blog to improve your knowledge about
 java programming and help to improve your
computer programming knowledge.......................

Here we are specially going to help our those friends who
have troubles in programming.............................

In this blog we started with basic Knowledge to Upgredetion so
that you can learn Programming very easily..............................

                                 -- SUNIL KUMAR MUKESH KUMAR