signatory.java

简单的奥运倒计时牌子

/**
 * <p>Title:Signatory</p>
 * <p>Discription:完成奥运倒计时的签名栏部分</p>
 * @author DELL
 * @version 1.0
 */
package Project1;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;

public class Signatory extends Frame{
	public JTextArea textarea1(){
		JTextArea textarea1 = new JTextArea();
		textarea1.setSize(150, 50);
		textarea1.setEditable(true);
		return textarea1;
	}
	public JTextArea textarea2(){
		JTextArea textarea2 = new JTextArea();
		File file=new File("F:\\example.txt");
		try {
			BufferedReader br = 
				new BufferedReader(
						new InputStreamReader(
								new FileInputStream("F:\\example.txt")));
			String s=null;
			try {
				while((s=br.readLine())!=null)
				{					
					textarea2.setText(s);					
				}
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}			
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		textarea2.setSize(300, 300);
		textarea2.setEditable(true);
		return textarea2;
	}
	public JButton button1(){//完成签名
		JButton button1 = new JButton("完成签名");
		button1.addActionListener(new button1Listener());
		return button1;
	}
	public JButton button2(){//重新签名
		JButton button2 = new JButton("重新签名");
		button2.addActionListener(new button2Listener());
		return button2;
	}
	public JButton button3(){//清除记录
		JButton button3 = new JButton("清除记录");
		button3.addActionListener(new button3Listener());
		return button3;
	}
	class button3Listener implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			textarea2().setText(null);
			}
		}
	class button2Listener implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			textarea1().setText(null);
			}
		}
	class button1Listener implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			PrintWriter backup;
			FileOutputStream backupFileStream;
			File backupFile;
			backupFile = new File("F:\\example.txt");
			String a = textarea1().getText();
			try {
				backupFileStream = new FileOutputStream(backupFile,true);
				backup = new PrintWriter(backupFileStream,true);
				backup.println(a);
			} catch (FileNotFoundException ee) {
				// TODO Auto-generated catch block
				ee.printStackTrace();
			}			
		}
	}
			
}