myframe.java

模拟操作系统的进程调用

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class MyFrame extends JFrame{
   private JRadioButton time_Button,first_Button;
   private JLabel label;
   private JButton button;
   private ButtonGroup radioGroup;

   public MyFrame()
   {
      super("进程调用");
      label=new JLabel();
      button=new JButton("确定");
      ButtonHandler handler = new ButtonHandler();
      button.addActionListener( handler );
      label.setText( "请选择调用方式:" );
      JRadioButton time_Button = new JRadioButton( "时间片调用" , false );
      JRadioButton first_Button = new JRadioButton( "优先级调用" , false );
      RadioHandler rHandler1 = new RadioHandler();
      RadioHandler rHandler2 = new RadioHandler();
      time_Button.addItemListener( rHandler1 );
      first_Button.addItemListener( rHandler2 );
      Container c = getContentPane();
      c.setLayout( new GridLayout( 4 , 1 ));
      c.add( label );
      c.add( time_Button );
      c.add( first_Button );
      c.add( button);
      
      ButtonGroup radioGroup = new ButtonGroup();
      radioGroup.add( time_Button );
      radioGroup.add( first_Button );
      
      setSize( 200 , 100 );
      show();
    }
    
   private class ButtonHandler implements ActionListener {
    	public void actionPerformed( ActionEvent e )
    	{
    		JOptionPane.showMessageDialog( null , "Everything is over!");
   		}
    		
    }
    
    private class RadioHandler implements ItemListener {
    	public void itemStateChanged ( ItemEvent e )
    	{
    		//if( e.getSource()  == time_Button )
    		{
    			FirstTime app = new FirstTime();
   		        app.run();
   		        JFrame myFrame = new JFrame();
   		        myFrame.getContentPane().add( new JScrollPane( app.getOutput() ) );
   			    myFrame.setSize(800,600);
   			    myFrame.show();	
   		        
   		    }
   		    /*else
   		    {
   		        Priority app = new Priority();
   		        app.run();	
   		    }*/
    	}
   }
    
    public static void main ( String args[] )
    {
      MyFrame application = new MyFrame();

            application.addWindowListener(
         
         // adapter to handle only windowClosing event
         new WindowAdapter() {
            
            public void windowClosing( WindowEvent event )
            {
               System.exit( 0 );
            }

         }  // end anonymous inner class

      ); // end call to addWindowListener
        
    }
}