memerystream3.java

来自「这是清华大学编写的JAVA教材中所有题目的源代码！」· Java 代码 · 共 35 行

import java.io.*;

class MemeryStream3
{
	public static void main(String args[])
	{
		String s="abcdefghijklmnopqrstuvwxyz";

		StringReader in = new StringReader(s);
		StringWriter out = new StringWriter();
		transform(in,out);
		
		String t=out.toString();
		System.out.println(t);
	}
	
	public static void transform(Reader in,Writer out)
	{
		int c=0;

		try
		{
			while((c=in.read())!=-1)
			{
				c=Character.toUpperCase((char)c);
				out.write(c);
			}
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}
}