Java.io.PrintWriter.setError() 方法

package com.codingdict;



import java.io.*;



public class PrintWriterDemo extends PrintWriter {



   public PrintWriterDemo(OutputStream out) {

      super(System.out);

   }



   public static void main(String[] args) {

      String s = "Hello World";



      // create a new writer

      PrintWriterDemo pw = new PrintWriterDemo(System.out);



      // write substrings

      pw.write(s, 0, 5);

      pw.write(s, 6, 5);



      // flush the writer

      pw.flush();



      // set the error state

      pw.setError();

   }

}