Java 文件与 IO【复习备考简单练习 三】

package test;

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

public class Main {
	
	public static void main(String[] args) throws IOException{
		FileInputStream fis = new FileInputStream("C:\\data1.txt");  // 获得原来的文件	
		FileOutputStream fos = new FileOutputStream("D:\\data2.txt"); // 要写入的文件
		int len = 0;	
		byte[] bytes = new byte[1024]; // 以字节形式写入
		while((len = fis.read(bytes)) != -1) {
			System.out.println(new String(bytes,0,len));
			fos.write(bytes,0,len);
		}
		fis.close();
		fos.close();
	}
}