全国计算机二级考试Java第9章练习题(3)

全国计算机二级考试Java第9章练习题

Import javax.swing.JButton;

Import javax.swing.JFram;

Import javax.swing.JPanel;

Import Java.awt.event.*;

Import java.io.*;

Import java.awt.*;

Public class swingExamples implements ActionListener

{

Private Jframe frame;

Private Jbutton button;

Private Jbutton saveButton;

Private Jtextrea textArea;

Private JfileChoose dia;

Private Jpanel buttonPanel;

Public void initGui()

{

Frame=new JFrame(“file chooser”);

Button=new Jbutton(“open file”);

Button.setActionCommand(“open”);

Button.addActionListener(this);

saveButton=new Jbutton(“save file”);

_____________________________;

saveButton.addActionListener(this);

textArea=new JtextArea(“”,10.,10);

buttonPanel=new Jpanel();

dia=new JfileChooser();

frame.addwindowListener(new windowAdapter()

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