java gul_[java实战篇]--java的GUI(1)

快来打我* 2022-11-10 01:17 103阅读 0赞

给出一个实例即可：

package mymenu;

import java.awt.\*;

import java.awt.event.\*;

import java.io.\*;

public class MyMenuTest

private Frame f;

private MenuBar bar;

private TextArea ta;

private Menu fileMenu;

private MenuItem openItem,saveItem,closeItem;

private FileDialog openDia,saveDia;

private File file;

MyMenuTest()

init();

public void init()

f = new Frame("my window");

f.setBounds(300,100,650,600);

bar = new MenuBar();

ta = new TextArea();

fileMenu = new Menu("文件");

openItem = new MenuItem("打开");

saveItem = new MenuItem("保存");

closeItem = new MenuItem("退出");

fileMenu.add(openItem);

fileMenu.add(saveItem);

fileMenu.add(closeItem);

bar.add(fileMenu);

f.setMenuBar(bar);

openDia = new FileDialog(f,"我要打开",FileDialog.LOAD);

saveDia = new FileDialog(f,"我要保存",FileDialog.SAVE);

f.add(ta);

myEvent();

f.setVisible(true);

private void myEvent()

saveItem.addActionListener(new ActionListener()

public void actionPerformed(ActionEvent e)

if(file==null)

saveDia.setVisible(true);

String dirPath = saveDia.getDirectory();

String fileName = saveDia.getFile();

if(dirPath==null || fileName==null)

return ;

file = new File(dirPath,fileName);

try

BufferedWriter bufw = new BufferedWriter(new FileWriter(file));

String text = ta.getText();

bufw.write(text);

//bufw.flush();

bufw.close();

catch (IOException ex)

throw new RuntimeException();

\});

openItem.addActionListener(new ActionListener()

public void actionPerformed(ActionEvent e)

openDia.setVisible(true);

String dirPath = openDia.getDirectory();

String fileName = openDia.getFile();

// System.out.println(dirPath+"..."+fileName);

if(dirPath==null || fileName==null)

return ;

ta.setText("");

file = new File(dirPath,fileName);

try

BufferedReader bufr = new BufferedReader(new FileReader(file));

String line = null;

while((line=bufr.readLine())!=null)

ta.append(line+"\\r\\n");

bufr.close();

catch (IOException ex)

throw new RuntimeException("读取失败");

\});

closeItem.addActionListener(new ActionListener()

public void actionPerformed(ActionEvent e)

System.exit(0);

\});

f.addWindowListener(new WindowAdapter()

public void windowClosing(WindowEvent e)

System.exit(0);

\});

public static void main(String\[\] args)

new MyMenuTest();

java gul_[java实战篇]--java的GUI(1)

发表评论取消回复

还没有评论，来说两句吧...

相关阅读

相关 Java Web 实战 02 - 多线程基础篇(1)

相关 Java--GUI

相关 java开发gui_开发Java GUI

相关 java gul_[java实战篇]--java的GUI(1)

相关 java gui 记_Java GUI【记事本】

相关 java颜色gui_java GUI 改变背景颜色

相关 Java项目:考试系统Java基础Gui(java+Gui)

相关 Java GUI编程1---AWT简介

相关 Java入门实战篇1

相关 Java GUI