java中出现错误的源文件，文件不包含FileWriter类

Question

import java.io.*;
public class FileCopy {
public static void main(String[] args) {
int b = 0;
FileReader in = null;
FileWriter out = null;
try {
in = new FileReader("d:/java/TestArry/Test.java");
out = new FileWriter("d:/java/zlc.java");
while((b=in.read())!=-1){
out.write(b);
}
out.close();
in.close();

  } catch (FileNotFoundException e2) {
    System.out.println("找不到指定文件"); System.exit(-1);
  } catch (IOException e1) {
    System.out.println("文件复制错误"); System.exit(-1);
  }
  System.out.println("文件已复制");

}
}
出现下面的错误

Answer 1

import java.io.FileWriter; 加上这个看看