bytearraytest.java

用java编写的一些初级代码

import java.io.*;
public class ByteArrayTest { 
    public static void main(String args[]){ 
	String tmp="abcdefghijklmnopqrstuvwxyz";
	byte [] src = tmp.getBytes();
	ByteArrayInputStream input = new ByteArrayInputStream(src);
	ByteArrayOutputStream output = new ByteArrayOutputStream();
	new ByteArrayTest().transform(input,output);
	byte []result = output.toByteArray();
	System.out.println(new String(result));
    }

    public void transform (InputStream in,OutputStream out)
    {
	int c=0;
	try
	{
	    while ((c=in.read())!=-1)
	    {
		int C=(int)Character.toUpperCase((char)c);
		out.write(C);
	    }
	}
	catch (Exception e)
	{
	    e.printStackTrace();
	}
    }
}