Java Mini Application

/*

Develop a mini project for any application using Java concepts

*/

 

// Swing Menu Component

// Graphics

 

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import java.awt.Graphics;

 

class SwingMenu implements ActionListener

{

     JFrame jf;

     JMenuBar mb;

     JMenu m1, m2, m3;

     JMenuItem f1, f2, s1,s2,s3;

     JRadioButtonMenuItem r1, r2, r3;

    

     SwingMenu()

     {

          jf = new JFrame();

         

          jf.setSize(500,500);

          jf.setTitle(“Swing Menu”);

             

          mb = new JMenuBar();

         

          m1 = new JMenu(“File”);

          m2 = new JMenu(“Shape”);

          m3 = new JMenu(“Color”);

         

          f1 = new JMenuItem(“New”, KeyEvent.VK_N);

          f2 = new JMenuItem(“Exit”,KeyEvent.VK_X );

         

          s1 = new JMenuItem(“Line”,KeyEvent.VK_L);

          s2 = new JMenuItem(“Rect”,KeyEvent.VK_R);

          s3 = new JMenuItem(“Circle”,KeyEvent.VK_C);

         

         f1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,InputEvent.CTRL_DOWN_MASK));

                  

         f2.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X,InputEvent.CTRL_DOWN_MASK));

         

         s1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_L,InputEvent.CTRL_DOWN_MASK));

         

         s2.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_R,InputEvent.CTRL_DOWN_MASK));

         

         s3.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,InputEvent.CTRL_DOWN_MASK));

         

          r1 = new JRadioButtonMenuItem(“Red”,true);

          r2 = new JRadioButtonMenuItem(“Green”);

          r3 = new JRadioButtonMenuItem(“Blue”);

         

          ButtonGroup bg = new ButtonGroup();

          bg.add(r1);

          bg.add(r2);

          bg.add(r3);

         

          m1.add(f1);

          m1.add(f2);

         

          m2.add(s1);

          m2.add(s2);

          m2.add(s3);

                  

          m3.add(r1);

          m3.add(r2);

          m3.add(r3);

         

          m2.addSeparator();

          m2.add(m3);

         

          mb.add(m1);

          mb.add(m2);

         

          f1.addActionListener(this);

          f2.addActionListener(this);

          s1.addActionListener(this);

          s2.addActionListener(this);

          s3.addActionListener(this);

          r1.addActionListener(this);

          r2.addActionListener(this);

          r3.addActionListener(this);

         

          jf.setJMenuBar(mb);

         

          jf.setVisible(true);

          jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

     }

    

     public void actionPerformed(ActionEvent ae)

     {

          Graphics g = jf.getGraphics();

          String cmd = ae.getActionCommand();

          Color c1 = Color.black;

                  

          if(r1.isSelected())

              c1 = Color.red;

          else if(r2.isSelected())

              c1 = Color.green;

          else if(r3.isSelected())

              c1 = Color.blue;

                                          

          if(cmd.equals(“New”))

          {

              jf.getContentPane().invalidate();

              jf.getContentPane().validate();

              jf.getContentPane().repaint();

          }

          if(cmd.equals(“Exit”))

              System.exit(0);

         

         

          int x1 = ((int)(Math.random()*1000))%250;

          int y1 = ((int)(Math.random()*1000))%250;

    

          if(cmd.equals(“Line”))

          {  

              int x2 = ((int)(Math.random()*1000))%500;

              int y2 = ((int)(Math.random()*1000))%500;

              g.setColor(c1);

              g.drawLine(x1,y1,x2,y2);

          }

          if(cmd.equals(“Rect”))

          {  

              int w = ((int)(Math.random()*1000))%200;

              int h = (int)(w/2);

              g.setColor(c1);

              g.drawRect(x1,y1,w,h);

          }

          if(cmd.equals(“Circle”))

          {  

              int w = ((int)(Math.random()*200));

              g.setColor(c1);

              g.drawOval(x1,y1,w,w);

          }

     }

    

     public static void main(String as[])

     {

          new SwingMenu();

     }

}