求一个简单的java程序_CMS教程

package test;

import javaawtBorderLayout;

import javaawtContainer;

import javaawteventActionEvent;

import javaawteventActionListener;

import javaawteventMouseEvent;

import javaawteventMouseListener;

import javaxswingJButton;

import javaxswingJFrame;

import javaxswingJLabel;

import javaxswingJMenu;

import javaxswingJMenuBar;

import javaxswingJMenuItem;

import javaxswingJPopupMenu;

import javaxswingJScrollPane;

import javaxswingJTextArea;

import javaxswingJToolBar;

@SuppressWarnings("serial")

public class MyEditor extends JFrame implements ActionListener,MouseListener {

private Container contentPane;

private JMenuBar menuBar=new JMenuBar();

private JMenu fileMenu=new JMenu("File");

private JMenu editMenu=new JMenu("Edit");

private JMenu helpMenu=new JMenu("Help");

private JMenuItem newMI=new JMenuItem("New");

private JMenuItem openMI=new JMenuItem("Open");

private JMenuItem saveMI=new JMenuItem("Save");

private JMenuItem exitMI=new JMenuItem("Exit");

private JMenuItem copyMI=new JMenuItem("Copy");

private JMenuItem cutMI=new JMenuItem("Cut");

private JMenuItem pasteMI=new JMenuItem("Paste");

private JMenuItem aboutMI=new JMenuItem("About");

private JToolBar toolBar=new JToolBar();

private JButton copyBtn=new JButton("Copy");

private JButton cutBtn=new JButton("Cut");

private JButton pasteBtn=new JButton("Paste");

private JScrollPane scorllPane=new JScrollPane();

private JTextArea editArea=new JTextArea();

private JLabel statusBar=new JLabel("status:");

private JPopupMenu popupMenu=new JPopupMenu();

private JMenuItem copyPMI=new JMenuItem("Copy");

private JMenuItem cutPMI=new JMenuItem("Cut");

private JMenuItem pastePMI=new JMenuItem("Paste");

public MyEditor(String title){

super(title);

setDefaultCloseOperation(JFrameEXIT_ON_CLOSE);

contentPane=getContentPane();

setSize(800,600);

initGUI();

}

private void initGUI(){

fileMenuadd(newMI);

fileMenuadd(openMI);

fileMenuadd(saveMI);

fileMenuaddSeparator(); //分割符

fileMenuadd(exitMI);

editMenuadd(copyMI);

editMenuadd(cutMI);

editMenuadd(pasteMI);

helpMenuadd(aboutMI);

menuBaradd(fileMenu);

menuBaradd(editMenu);

menuBaradd(helpMenu);

popupMenuadd(copyPMI);

popupMenuadd(cutPMI);

popupMenuadd(pastePMI);

setJMenuBar(menuBar);

contentPanesetLayout(new BorderLayout());

toolBaradd(copyBtn);

toolBaradd(cutBtn);

toolBaradd(pasteBtn);

contentPaneadd(toolBar,BorderLayoutNORTH);

thisscorllPanegetViewport()add(thiseditArea);

contentPaneadd(scorllPane,BorderLayoutCENTER);

contentPaneadd(thisstatusBar,BorderLayoutSOUTH);

exitMIaddActionListener(this);

copyMIaddActionListener(this);

cutMIaddActionListener(this);

pasteMIaddActionListener(this);

saveMIaddActionListener(this);

copyBtnaddActionListener(this);

cutBtnaddActionListener(this);

pasteBtnaddActionListener(this);

editAreaaddMouseListener(this);

}

public void actionPerformed(ActionEvent e){

Object source=egetSource();

if(source==exitMI){

Systemexit(0);

}

if(source==copyMI || source==copyBtn){

editAreacopy();

}

if(source == cutMI || source == cutBtn){

editAreacut();

}

if(source==pasteMI || source==pasteBtn){

editAreapaste();

}

public void go(){

setVisible(true);

}

public static void main(String[] args) {

(new MyEditor("my editor"))go();

}

public void mouseClicked(MouseEvent e) {