43.txt

是一个 java 基础学习软件 有设计说明

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.*;
import java.awt.geom.*;
import java.util.*;

// 窗口事件  和  文本框事件

public class EventTest
{
   public static void main(String[] args)
   {
      EventFrame frame = new EventFrame();
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	  frame.show();
	  frame.addWindowListener(new
	  		WindowAdapter()
	  		{
				public void windowClosing(WindowEvent e)
				{
					System.exit(0);
				}
			});
	}
}
//  define Frame

class EventFrame extends JFrame
{
   Container contentPane;
   public EventFrame()
   {
      setSize(WIDTH, HEIGHT);
      setTitle("窗口测试");
   		//  create a panel
   	  EventPanel panel = new EventPanel();
   	 	 // add panel to frame
   	  contentPane = getContentPane();
   	  //JScrollPane scrollpane = new JScrollPane (panel.showField);
   	  contentPane.add(panel,BorderLayout.CENTER);
 

   }

   public static final int WIDTH = 400;
   public static final int HEIGHT = 400;

}

//  define panel

class EventPanel extends JPanel
{
	//private String s ;
	JTextField textEditor;
	JTextField pswField;
	JTextArea showField;

	public int n = 0;
	public EventPanel()
	{
		JButton yellowButton = new JButton("Background Turn to Yellow");
		JButton blueButton = new JButton("Backgound Turn to Blue");
		textEditor = new JTextField("",15);
		pswField = new JTextField("",15);
		showField = new  JTextArea (5,30);
		
		showField.setLineWrap(true); 
		JScrollPane scrollpane = new JScrollPane (showField);
	
		//Container contentPane = showField.getcogetContentPane();
		//contentPane.add(scrollpane,BorderLayout.CENTER);
		//add(copyButton);
		//add(pasteButton);
		add(yellowButton);
		add(blueButton);
		add(textEditor);
		add(pswField);

		makeButton("Copy L",0);
		makeButton("Copy R",1);



		add(showField);
		makeButton("Clear",8);
		makeButton("Exit",9);
/// Create action
		ColorAction yellowAction = new ColorAction(Color.yellow);     //ColorAction  inside class
		ColorAction blueAction = new ColorAction(Color.blue);
		//TextAction  copyAction = new TextAction(textEditor.getText(),false);
		//TextAction  pasteAction = new TextAction(textEditor.getText(),true);
/// association actions with buttons
		yellowButton.addActionListener(yellowAction);
		blueButton.addActionListener(blueAction);
	}

	//    make button
	public void makeButton(String name,final int i)
	{
		JButton button = new JButton(name);
		add(button);
		button.addActionListener(new ActionListener()
				{
					public void actionPerformed(ActionEvent event)
					{
						if (i==0)
						{
							n++;
							String s = showField.getText();
							pswField.setText(textEditor.getText());
							showField.setText(s+n+".复制左边到右边："+textEditor.getText()+'\n');

						}
						else if(i==1)
						{
							n++;
							String s = showField.getText();
							textEditor.setText(pswField.getText());
							showField.setText(s+n+".复制右边到左边："+textEditor.getText()+'\n');

						}
						else if (i==8)
						{
							n = 0;
							showField.setText("");
						}
						else if (i==9)
							System.exit(0);
					}
				});
	}

// define ActionListener
    ////*   color
	class ColorAction implements ActionListener
	{
		public ColorAction(Color c)
		{
			backgroundColor = c;
		}
		public void actionPerformed(ActionEvent event)
		{
			setBackground(backgroundColor);
			repaint();
		}
		private Color backgroundColor;
	}
	//*/
//   text copy paste

	class TextAction implements ActionListener
	{
		public TextAction(String s,boolean b)
		{
			text=s;
			bool=b;
		}
		public void actionPerformed(ActionEvent event)
		{
			if(bool)
				pswField.setText(text);


		}
		private String text;
		private boolean bool;

	}

}
//*/