imageviewer.txt

一般格式图片浏览器

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
public class imageviewer
{    public static void main(String args[])
    {    JFrame fr=new imageviewerframe();
    fr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
        //fr.setDefautCloseOperation(JFrame.EXIT_ON_CLOSE);
        fr.show();
    }
}
class imageviewerframe extends JFrame
{    public imageviewerframe()
    {    setTitle("图片浏览");
        setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);
        l=new JLabel();
        Container con=getContentPane();
        con.add(l,BorderLayout.CENTER);
        ch=new JFileChooser();
        ch.setCurrentDirectory(new File("."));
        Button bt=new Button("打开");
        con.add(bt,BorderLayout.SOUTH);
        bt.addActionListener(new ActionListener()
            {    public void actionPerformed(ActionEvent evt)
                {    int r=ch.showOpenDialog(null);
                    if(r==JFileChooser.APPROVE_OPTION)
        {        //String name=JFileChooser.APPROVE_SELECTION;
                String name=ch.getCurrentDirectory()+"\\"+ch.getSelectedFile().getName();
            
                l.setIcon(new ImageIcon(name));
                    }
                }
            });
            
    }
    
    private JLabel l;
    private JFileChooser ch;
    private static final int DEFAULT_WIDTH=300;
    private static final int DEFAULT_HEIGHT=400;