JavaIO流学习总结-StringReader和StringWriter基本操作练习

package io;

import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;

/*
 * 修改日期:2020/04/05
 * 修改人:牟松
 * 字符流StringReader和StringWriter基本操作练习
 */
public class ceshi {
 public static void main(String[] args)
   {
     //用法跟byteArrayInputStream和byteArrayOutputStream的用法差不多
     StringReader reader = new StringReader("i love you");
     StringWriter writer = new StringWriter();
     int length;
     try {
        while((length = reader.read())!=-1)
          {
             int chUpper = Character.toUpperCase(length);
             writer.write(chUpper);
          }
        System.out.println(writer.getBuffer().toString());
     } catch (IOException e) {
        e.printStackTrace();
     }
   }
}