JAVA FIle 실습 #1

package com.tistory.tansanc;

import java.awt.Color;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import javax.swing.JButton;

import javax.swing.JColorChooser;

import javax.swing.JFrame;

import javax.swing.JPanel;

class MyFrame extends JFrame {

private JButton button1;

private JButton button2;

private JPanel panel;

public MyFrame() {

this.setSize(300, 200);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setTitle("이벤트 예제");

panel = new JPanel();

button1 = new JButton("색상선택");

button1.addActionListener(new MyListener());

panel.add(button1);

this.add(panel);

LoadFile();

this.setVisible(true);

}

private void LoadFile() {

// TODO Auto-generated method stub

ObjectInputStream oos = null;

try {

oos = new ObjectInputStream(

new FileInputStream("Color.bin"));

Color newColor = (Color)oos.readObject();

panel.setBackground(newColor);

oos.close();

} catch ( IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

} catch (ClassNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

private class MyListener implements ActionListener {

public void actionPerformed(ActionEvent e) {

if (e.getSource() == button1) {

JColorChooser colorChooser = 

new JColorChooser();

Color newColor =

colorChooser.showDialog(MyFrame.this,

"Hello",Color.red);

System.out.println(newColor);

panel.setBackground(newColor);

ObjectOutputStream oos = null;

try {

oos = new ObjectOutputStream(

new FileOutputStream("Color.bin"));

oos.writeObject(newColor);

oos.close();

} catch ( IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

} 

}

}

}

public class MyFrameTest2 {

public static void main(String[] args) {

MyFrame t = new MyFrame();

}

}