?? backup.java
字號:
/******************************
* 備份版塊 *
******************************/
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
public class backUp implements ActionListener
{ private static JFrame frm;
static File file=new File("backUp.dat");
static Byte bt[];
static FileInputStream fi;
static FileOutputStream fo;
static DataInputStream in;
static DataOutputStream out;
public void actionPerformed(ActionEvent e){
frm=phonenum.getFrame();
try{
fi=new FileInputStream("phonenum.mdb");
fo=new FileOutputStream(file);
in= new DataInputStream(fi);
out = new DataOutputStream(fo);
int i;
while ( (i = in.read()) != -1) {
out.write(i); //依次從輸入流中讀入字符,并將字符寫入到輸出流
}
in.close(); //關(guān)閉輸入流
out.close();
}
catch(Exception e2){
}
JOptionPane.showMessageDialog(frm,"備份完畢,還原請將backUp.dat改為phonenum.mdb覆蓋原文件");
}
}
?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -