将桌面文件复制到D盘

import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; public class CcopyD { public static void main(String [] args) {         try{     Copy();}       catch(IOException e){       e.printStackTrace();  }     System.out.print("文件复制成功！");    }   public static void Copy() throws IOException{       FileReader fr= new FileReader("C:\\Documents and Settings\\Administrator\\桌面\\out.txt");       FileWriter fw=new FileWriter("D:\\o.java");       int n=0;       char[] buf= new char [1024];        while((n=fr.read(buf))!=-1){           fw.write(buf,0,n);       }        fw.close();       fr.close();  } }