java實現復制粘貼文件java

實現將E:\\itcast\\creat.txt內容復制到Normal\\out.txt（idea項目）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");//創建字節輸入流對象
        FileOutputStream out=new FileOutputStream("Normal\\out.txt");//創建字節輸出流對象

      int len;
     while((len=in.read())!=-1){
         out.write(len);//一次讀寫一個字節
     }
in.close();
     out.close();//一定記住關閉資源

    }
}
復制圖片：

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");//將E盤下的圖片地址給字節輸入流對象In
        FileOutputStream out = new FileOutputStream("Gzy_BasicJava\\newCopy.jpg");//字節輸出流地址
        byte[] bytes = new byte[1024];
        int len ;
        while ((len = in.read(bytes)) != -1) {
            out.write(bytes,0,len);
        }
        in.close();//釋放資源
        out.close();
    }
}