使用IO流拷贝文件

package org.demo;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class IOTest {

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		//拷贝文件
		File file=new File("D:\cc.txt");
		FileInputStream fis=new FileInputStream(file);
		FileOutputStream fos=new FileOutputStream("D:\Copycc.txt");
		byte b[]=new byte[(int)file.length()];
		fis.read(b);
		fos.write(b);
		System.out.println("copy成功");

	}

}