filecopy.java

这是一个java编写的c/s模式在线考试系统

import java.io.*;
import java.awt.*;
import javax.swing.*;
public class FileCopy{
	public static void main(String[] args) {
		JFrame jf=new JFrame("文件的复制");
		jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		jf.setResizable(false);
		jf.setLocation(300,300);
		for(int i=0;i<=100;i=i+ss()){
		jf.add(new Scrollbar(Scrollbar.HORIZONTAL, 0, i, 0, 100));
			}
 		jf.setSize(400,45);
 		jf.show();
		}
	static int ss(){
		int b=0;
		int j=0;
		try{File f1=new File("E:\\包成星\\ZY3\\file1.txt");
		FileReader fr=new FileReader(f1);
		BufferedReader br=new BufferedReader(fr); 
		
		File f2=new File("E:\\包成星\\ZY3\\file2.txt");
		FileWriter fw=new FileWriter(f2);
		BufferedWriter bw=new BufferedWriter(fw);
		
		int len=(int)f1.length();
		char[] s=new char[len];
		br.read(s);
		for( j=0;j<s.length;j++){
			System.out.print((char)s[j]);
			
			}
		bw.write(s);
		 b=(int)((j/s.length)*100);
		
		 br.close();
		 bw.close(); 
		 }catch(Exception e){}
		 return b;
			}
	}