~~~ package io.a2; import java.io.*; public class Test { public static void main(String[] args) throws Exception { //FileReader fz = new FileReader("E:/javadaima/java2-1/51zxw.jpg"); //FileWriter zt = new FileWriter("e:/51zxw.jpg"); //路径的斜杠和windows中相反 FileInputStream fz = new FileInputStream("F:/test.jpg"); FileOutputStream zt = new FileOutputStream("E:/AA.jpg"); int aa; aa = fz.read(); while (aa!=(-1)) { zt.write(aa); aa = fz.read(); } zt.flush(); //将流中残留内容全部写入文件，该函数需写在文件关闭之前 fz.close(); zt.close(); } } ~~~ 将F盘中的test.jpg图片复制到D盘中，并命名为AA.jpg