bytedemo.java

学习参考,java基本语法练习,包括一些常用的技巧

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;

public class ByteDemo extends JFrame implements ActionListener
{
	JPanel pnlMain;
	JLabel lblName,lblGender,lblAge,lblAddress;
	JTextField txtName,txtGender,txtAge,txtAddress;
	JButton btnOpen,btnSave;
	JFileChooser fc;
	public ByteDemo()
	{
		super("字节方式读写文件演示");
		fc=new JFileChooser();
		pnlMain=new JPanel(new GridLayout(5,2));
		lblName=new JLabel("姓名:");
		lblGender=new JLabel("性别:");
		lblAge=new JLabel("年龄:");
		lblAddress=new JLabel("家庭地址:");
		txtName=new JTextField(10);
		txtGender=new JTextField(10);
		txtAge=new JTextField(10);
		txtAddress=new JTextField(10);
		btnOpen=new JButton("读取");
		btnOpen.addActionListener(this);
		btnSave=new JButton("保存");
		btnSave.addActionListener(this);
		pnlMain.add(lblName);
		pnlMain.add(txtName);
		pnlMain.add(lblGender);
		pnlMain.add(txtGender);
		pnlMain.add(lblAge);
		pnlMain.add(txtAge);
		pnlMain.add(lblAddress);
		pnlMain.add(txtAddress);
		pnlMain.add(btnOpen);
		pnlMain.add(btnSave);
		setContentPane(pnlMain);
		setSize(300,200);
		setVisible(true);
	}
	public void actionPerformed(ActionEvent ae)
	{
		if (ae.getSource()==btnOpen)
			{

			fc.showOpenDialog(this);
			}
		else if (ae.getSource()==btnSave)
		{
			fc.showSaveDialog(this);
		}			
	}
	public static void main(String args[])
	{
		new ByteDemo();
	}
}