java实现复制粘贴文件java

实现将E:\itcast\creat.txt内容复制到Normal\out.txt（idea项目）中

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class CopyDate {
    public static void main(String[] args) throws IOException {
        FileInputStream in=new FileInputStream("E:\itcast\creat.txt");//创建字节输入流对象
        FileOutputStream out=new FileOutputStream("Normal\out.txt");//创建字节输出流对象

      int len;
     while((len=in.read())!=-1){
         out.write(len);//一次读写一个字节
     }
in.close();
     out.close();//一定记住关闭资源

    }
}
复制图片：

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class CopyImg {
    public static void main(String[] args) throws IOException {
        FileInputStream in = new FileInputStream("E:\itcast\1.jpg");//将E盘下的图片地址给字节输入流对象In
        FileOutputStream out = new FileOutputStream("Gzy_BasicJava\newCopy.jpg");//字节输出流地址
        byte[] bytes = new byte[1024];
        int len ;
        while ((len = in.read(bytes)) != -1) {
            out.write(bytes,0,len);
        }
        in.close();//释放资源
        out.close();
    }
}