public class CopyFileDemo {
public static void main(String[] args) throws Exception {
FileReader fr = new FileReader("e:/dji.txt");
FileWriter fw = new FileWriter("e:/djicopy.txt");
int ch;
while((ch=fr.read())!=-1) {
fw.write(ch);
}
fw.close();
fr.close();
}
}
![图片说明](https://img-ask.csdn.net/upload/201909/05/1567697442_594312.png)
文件放在e盘根目录了,想做个文件复制的demo,每次都提醒是
Exception in thread "main" java.io.FileNotFoundException: e:\dji.txt (系统找不到指定的文件。)