Java.io.StringWriter.append() 方法

package com.codingdict;



import java.io.*;



public class StringWriterDemo {



   public static void main(String[] args) {



      // create a new writer

      StringWriter sw = new StringWriter();



      // append a char       

      System.out.println("" + sw.append("a"));

      System.out.println("" + sw.append("b"));



   }

}