import java.awt.*;

/** A Circle component built using a Canvas. 
 *
  */

public class Circle extends Canvas {
  private int width, height;        
        
  public Circle(Color foreground, int radius) {
    setForeground(foreground);
    width = 2*radius;
    height = 2*radius;
    setSize(width, height);
  }

  public void paint(Graphics g) {
    g.fillOval(0, 0, width, height);
  }

  public void setCenter(int x, int y) {
    setLocation(x - width/2, y - height/2);
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10320
Categories:Programming Code Examples, Java/J2EE/J2ME, AWT Components
Tags:Java/J2EE/J2MEAWT Components
Post Data:2017-01-02 16:04:31

Shop Online: https://www.ShopForSoul.com/
(Big Data, Cloud, Security, Machine Learning): Courses: http://Training.SitesTree.com
In Bengali: http://Bangla.SaLearningSchool.com
http://SitesTree.com
8112223 Canada Inc./JustEtc: http://JustEtc.net (Software/Web/Mobile/Big-Data/Machine Learning)
Shop Online: https://www.ShopForSoul.com/
Medium: https://medium.com/@SayedAhmedCanada

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

/** Insert three circles into an Applet using FlowLayout. 
 *
 */

public class CircleTest extends Applet {
  public void init() {
    setBackground(Color.lightGray);
    add(new Circle(Color.white, 30));
    add(new Circle(Color.gray, 40));
    add(new Circle(Color.black, 50));
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10319
Categories:Programming Code Examples, Java/J2EE/J2ME, AWT Components
Tags:Java/J2EE/J2MEAWT Components
Post Data:2017-01-02 16:04:31

Shop Online: https://www.ShopForSoul.com/
(Big Data, Cloud, Security, Machine Learning): Courses: http://Training.SitesTree.com
In Bengali: http://Bangla.SaLearningSchool.com
http://SitesTree.com
8112223 Canada Inc./JustEtc: http://JustEtc.net (Software/Web/Mobile/Big-Data/Machine Learning)
Shop Online: https://www.ShopForSoul.com/
Medium: https://medium.com/@SayedAhmedCanada

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

*********************
 
public class HelloWWW extends Applet {
  private int fontSize = 40;
  
  public void init() {
    setBackground(Color.black);
    setForeground(Color.white);
    setFont(new Font("SansSerif", Font.BOLD, fontSize));
  }
  
  public void paint(Graphics g) {
    g.drawString("Hello, World Wide Web.", 5, fontSize+5);
  }
}
< <<<<<<<<<<<<<<<<<<<<

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10399
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Java
Tags:Java/J2EE/J2MEBasic Java
Post Data:2017-01-02 16:04:39

Shop Online: https://www.ShopForSoul.com/
(Big Data, Cloud, Security, Machine Learning): Courses: http://Training.SitesTree.com
In Bengali: http://Bangla.SaLearningSchool.com
http://SitesTree.com
8112223 Canada Inc./JustEtc: http://JustEtc.net (Software/Web/Mobile/Big-Data/Machine Learning)
Shop Online: https://www.ShopForSoul.com/
Medium: https://medium.com/@SayedAhmedCanada

******************
ShowArgs.java Application that reports all command-line arguments.
******************
 */

public class ShowArgs {
  public static void main(String[] args) {
    for(int i=0; i<args .length; i++) {
      System.out.println("Arg " + i + " is " + args[i]);
    }
  }
}
/*

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10398
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Java
Tags:Java/J2EE/J2MEBasic Java
Post Data:2017-01-02 16:04:39

Shop Online: https://www.ShopForSoul.com/
(Big Data, Cloud, Security, Machine Learning): Courses: http://Training.SitesTree.com
In Bengali: http://Bangla.SaLearningSchool.com
http://SitesTree.com
8112223 Canada Inc./JustEtc: http://JustEtc.net (Software/Web/Mobile/Big-Data/Machine Learning)
Shop Online: https://www.ShopForSoul.com/
Medium: https://medium.com/@SayedAhmedCanada

*******************
HelloWorld.java Basic Hello World application. 
*******************
 */

public class HelloWorld {
 public static void main(String[] args) {
    System.out.println("Hello, world.");
  }
}
/*

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10397
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Java
Tags:Java/J2EE/J2MEBasic Java
Post Data:2017-01-02 16:04:39

Shop Online: https://www.ShopForSoul.com/
(Big Data, Cloud, Security, Machine Learning): Courses: http://Training.SitesTree.com
In Bengali: http://Bangla.SaLearningSchool.com
http://SitesTree.com
8112223 Canada Inc./JustEtc: http://JustEtc.net (Software/Web/Mobile/Big-Data/Machine Learning)
Shop Online: https://www.ShopForSoul.com/
Medium: https://medium.com/@SayedAhmedCanada

DropBall.java Uses a while loop to determine how long it takes a ball to fall from the top of the Washington Monument to the ground
************************************************************
/** Simulating dropping a ball from the top of the Washington
 *  Monument. The program outputs the height of the ball each
 *  second until the ball hits the ground.
 *
 *****************************************

public class DropBall {
  public static void main(String[] args) {
    int time = 0;
    double start = 550.0, drop = 0.0;
    double height = start;
    while (height > 0) {
      System.out.println("After " + time + 
                   (time==1 ? " second, " : " seconds,") + 
                   "the ball is at " + height + " feet.");
      time++;                   
      drop = freeFall(time);
      height = start - drop;
    }
    System.out.println("Before " + time + " seconds could " +
                       "expire, the ball hit the ground!");
  }
  
  /** Calculate the distance in feet for an object in 
   *  free fall. 
   */

  public static double freeFall (float time) {
    // Gravitational constant is 32 feet per second squared
    return(16.0 * time * time); // 1/2 gt^2
  }
}
@@@@@@@@@@@@@@@@@@@@

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10386
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Java
Tags:Java/J2EE/J2MEBasic Java
Post Data:2017-01-02 16:04:39

Shop Online: https://www.ShopForSoul.com/
(Big Data, Cloud, Security, Machine Learning): Courses: http://Training.SitesTree.com
In Bengali: http://Bangla.SaLearningSchool.com
http://SitesTree.com
8112223 Canada Inc./JustEtc: http://JustEtc.net (Software/Web/Mobile/Big-Data/Machine Learning)
Shop Online: https://www.ShopForSoul.com/
Medium: https://medium.com/@SayedAhmedCanada

/** Taken from Core Web Programming from
 *  Prentice Hall and Sun Microsystems Press,
 *  .
 *  © 2001 Marty Hall and Larry Brown;
 *  may be freely used or adapted.
 */


  public class StringTest {
  public static void main (String[] args) {
    String str = "";
    if (args.length > 0) {
        str = args[0];
    }
    if (str.length()>8) {
      System.out.println("String is "" + str + ""n");
      System.out.println("  charAt(3) ------------------ " +
                         str.charAt(3));
      System.out.println("  compareTo(Moscow) ---------- " +
                         str.compareTo("Moscow"));
      System.out.println("  concat(SuFFiX) ------------- " +
                         str.concat("SuFFiX"));
      System.out.println("  endsWith(hic) -------------- " +
                         str.endsWith("hic"));
      System.out.println("  == Geographic -------------- " +
                         (str == "Geographic"));
      System.out.println("  equals(geographic) --------- " +
                         str.equals("geographic"));
      System.out.println("  equalsIgnoreCase(geographic) " +
                         str.equalsIgnoreCase("geographic"));
      System.out.println("  indexOf('o') --------------- " +
                         str.indexOf('o'));
      System.out.println("  indexOf('i',5) ------------- " +
                         str.indexOf('i',5));
      System.out.println("  indexOf('o',5) ------------- " +
                         str.indexOf('o',5));
      System.out.println("  indexOf(rap) --------------- " +
                         str.indexOf("rap"));
      System.out.println("  indexOf(rap, 5) ------------ " +
                         str.indexOf("rap", 5));
      System.out.println("  lastIndexOf('o') ----------- " +
                         str.lastIndexOf('o'));
      System.out.println("  lastIndexOf('i',5) --------- " +
                         str.lastIndexOf('i',5));
      System.out.println("  lastIndexOf('o',5) --------- " +
                         str.lastIndexOf('o',5));
      System.out.println("  lastIndexOf(rap) ----------- " +
                         str.lastIndexOf("rap"));
      System.out.println("  lastIndexOf(rap, 5) -------- " +
                         str.lastIndexOf("rap", 5));
      System.out.println("  length() ------------------- " +
                         str.length());
      System.out.println("  replace('c','k') ----------- " +
                         str.replace('c','k'));
      System.out.println("  startsWith(eog,1) ---------- " +
                         str.startsWith("eog",1));
      System.out.println("  startsWith(eog) ------------ " +
                         str.startsWith("eog"));
      System.out.println("  substring(3) --------------- " +
                         str.substring(3));
      System.out.println("  substring(3,8) ------------- " +
                         str.substring(3,8));
      System.out.println("  toLowerCase() -------------- " +
                         str.toLowerCase());
      System.out.println("  toUpperCase() -------------- " +
                         str.toUpperCase());
      System.out.println("  trim() --------------------- " +
                         str.trim());
      System.out.println("nString is still "" + str + ""n");
    }
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10225
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Java
Tags:Java/J2EE/J2MEBasic Java
Post Data:2017-01-02 16:04:28

Shop Online: https://www.ShopForSoul.com/
(Big Data, Cloud, Security, Machine Learning): Courses: http://Training.SitesTree.com
In Bengali: http://Bangla.SaLearningSchool.com
http://SitesTree.com
8112223 Canada Inc./JustEtc: http://JustEtc.net (Software/Web/Mobile/Big-Data/Machine Learning)
Shop Online: https://www.ShopForSoul.com/
Medium: https://medium.com/@SayedAhmedCanada

import java.text.*;

/** Formatting real numbers with DecimalFormat.
 *
 *  Taken from Core Web Programming from
 *  Prentice Hall and Sun Microsystems Press,
 *  .
 *  © 2001 Marty Hall and Larry Brown;
 *  may be freely used or adapted.
 */

public class NumFormat {
  public static void main (String[] args) {
    DecimalFormat science = new DecimalFormat("0.000E0");
    DecimalFormat plain = new DecimalFormat("0.0000");

    for(double d=100.0; d<140.0; d*=1.10) {
      System.out.println("Scientific: " + science.format(d) +
                         " and Plain: " + plain.format(d));
    }
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10224
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Java
Tags:Java/J2EE/J2MEBasic Java
Post Data:2017-01-02 16:04:23

Shop Online: https://www.ShopForSoul.com/
(Big Data, Cloud, Security, Machine Learning): Courses: http://Training.SitesTree.com
In Bengali: http://Bangla.SaLearningSchool.com
http://SitesTree.com
8112223 Canada Inc./JustEtc: http://JustEtc.net (Software/Web/Mobile/Big-Data/Machine Learning)
Shop Online: https://www.ShopForSoul.com/
Medium: https://medium.com/@SayedAhmedCanada

import java.io.*;

/** Taken from Core Web Programming from
 *  Prentice Hall and Sun Microsystems Press,
 *  .
 *  © 2001 Marty Hall and Larry Brown;
 *  may be freely used or adapted.
 */

public class NegativeLengthException extends Exception {

  /** Test NegativeLengthException */

  public static void main(String[] args) {
    try {
      int lineLength = readLength();
      for(int i=0; i<linelength ; i++) {
        System.out.print("*");
      }
      System.out.println();
    } catch (NegativeLengthException nle) {
      System.out.println("NegativeLengthException: " +
                         nle.getMessage());
    }
  }

  public NegativeLengthException() {
    super("Negative dimensions not permitted.");
  }

  public NegativeLengthException(String message) {
    super(message);
  }

  // readLength catches IOExceptions locally but lets the
  // calling method handle NegativeLengthExceptions.
  private static int readLength() throws NegativeLengthException {
    BufferedReader in = new BufferedReader(
                          new InputStreamReader(System.in));
    System.out.print("Enter length: ");
    System.out.flush();
    int len = 0;
    try {
      String line = in.readLine();
      len = Integer.parseInt(line);
      if (len < 0) {
        throw new NegativeLengthException();
      }
    } catch (IOException ioe) {
      System.out.println("Problem reading from keyboard");
    }
    return(len);
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10223
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Java
Tags:Java/J2EE/J2MEBasic Java
Post Data:2017-01-02 16:04:23

Shop Online: https://www.ShopForSoul.com/
(Big Data, Cloud, Security, Machine Learning): Courses: http://Training.SitesTree.com
In Bengali: http://Bangla.SaLearningSchool.com
http://SitesTree.com
8112223 Canada Inc./JustEtc: http://JustEtc.net (Software/Web/Mobile/Big-Data/Machine Learning)
Shop Online: https://www.ShopForSoul.com/
Medium: https://medium.com/@SayedAhmedCanada

/** Taken from Core Web Programming from
 *  Prentice Hall and Sun Microsystems Press,
 *  .
 *  © 2001 Marty Hall and Larry Brown;
 *  may be freely used or adapted.
 */

import java.awt.Point;

public class ModificationTest extends ReferenceTest {
  public static void main(String[] args) {
    Point p1 = new Point(1, 2); // Assign Point to p1
    Point p2 = p1; // p2 is new reference to *same* Point
    print("p1", p1); // (1, 2)
    print("p2", p2); // (1, 2)
    munge(p2); // Changes fields of the *single* Point
    print("p1", p1); // (5, 10)
    print("p2", p2); // (5, 10)
  }

  public static void munge(Point p) {
    p.x = 5;
    p.y = 10;
  }
}


/** Taken from Core Web Programming from
 *  Prentice Hall and Sun Microsystems Press,
 *  .
 *  © 2001 Marty Hall and Larry Brown;
 *  may be freely used or adapted.
 */

import java.awt.Point;

public class ReferenceTest {
  public static void main(String[] args) {
    Point p1 = new Point(1, 2); // Assign Point to p1
    Point p2 = p1; // p2 is new reference to *same* Point
    print("p1", p1); // (1, 2)
    print("p2", p2); // (1, 2)
    triple(p2); // Doesn?t change p2
    print("p2", p2); // (1, 2)
    p2 = triple(p2); // Have p2 point to *new* Point
    print("p2", p2); // (3, 6)
    print("p1", p1); // p1 unchanged: (1, 2)
  }

  public static Point triple(Point p) {
    p = new Point(p.x * 3, p.y * 3); // Redirect p
    return(p);
  }

  public static void print(String name, Point p) {
    System.out.println("Point " + name + "= (" +
                       p.x + ", " + p.y + ").");
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10222
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Java
Tags:Java/J2EE/J2MEBasic Java
Post Data:2017-01-02 16:04:23

Shop Online: https://www.ShopForSoul.com/
(Big Data, Cloud, Security, Machine Learning): Courses: http://Training.SitesTree.com
In Bengali: http://Bangla.SaLearningSchool.com
http://SitesTree.com
8112223 Canada Inc./JustEtc: http://JustEtc.net (Software/Web/Mobile/Big-Data/Machine Learning)
Shop Online: https://www.ShopForSoul.com/
Medium: https://medium.com/@SayedAhmedCanada