import Java.awt.*; import java.awt.event.*; import javax.swing.*; import java.io.*;
class Chooserrun extends JFrame implements ActionListener { JButton button; JTextArea text; JTextPane textpane; FileInputStream readfile; JScrollPane scroll; // Container con; Jpanel con; JFileChooser chooser=new JFileChooser(); //========================================== public Chooserrun() { super("有文件选择器的窗口"); button=new JButton("打开文件选择器"); button.addActionListener(this); textpane=new JTextPane(); JFileChooser chooser=new JFileChooser(); scroll=new JScrollPane(textpane); // JFileChooser chooser=new JFileChooser(); //不能在此处初始化! this.setSize( new Dimension(200,200)); setVisible(true); con=(Jpanel)this.getContentPane(); con.add(button,BorderLayout.NORTH); con.add(scroll,BorderLayout.CENTER); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { dispose();System.exit(0);}}); } //==================================================== public void actionPerformed(ActionEvent e) { if(e.getSource()==button) { String s; int state =chooser.showOpenDialog(null); File file=chooser.getSelectedFile(); { try { Runtime ce=Runtime.getRuntime(); ce.exec(file.toString()); } catch(IOException e1) { e1.printStackTrace(); } } } } //-------------------------------------- } import javax.swing.UIManager; import java.awt.*; public class mytest { public static void main(String args[]) { Chooserrun run=new Chooserrun(); run.pack(); Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); Dimension frameSize = run.getSize(); if (frameSize.height > screenSize.height) { frameSize.height = screenSize.height; } if (frameSize.width > screenSize.width) { frameSize.width = screenSize.width; } run.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2); } }
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