1、java拷贝字符文件

2、代码如下：

package Demo1;import java.io.*;public class copyfile {    public static void main(String[] args) {        try {            cp();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }        public static void cp() throws IOException    {        FileWriter fw=null;        FileReader fr=null;        char a[]=new char[1024];        int len=0;        fr=new FileReader("D:\\Eclipse_jee_java\\javaDemo\\Demo1\\src\\Demo1\\demo1.java");        fw=new FileWriter("F:\\copy.text");        while((len=fr.read(a))!=-1)        {            fw.write(a, 0, len);        }        fr.close();        fw.close();    }}