package com.itranswarp.learnjava;

import java.io.*;

/**
 * Learn Java from https://www.liaoxuefeng.com/
 * 
 * @author liaoxuefeng
 */
public class CopyFile {

	public static void main(String[] args) throws IOException {
		if (args.length != 2) {
			System.err.println("Usage:\n  java CopyFile.java <source> <target>");
			System.exit(1);
		}
		copy(args[0], args[1]);
		System.out.println("Done!");
	}

	static void copy(String source, String target) throws IOException {
		// 友情提示：测试时请使用无关紧要的文件
		// TODO:
		String s;
		StringBuilder sb=new StringBuilder ();
		InputStream input=new FileInputStream(source);
		OutputStream output=new FileOutputStream(target);
	    byte[] buffer=new byte[1024];
		try(input){
			int n;									
		    while((n=input.read(buffer))!=-1) {		    	
			    sb.append(new String(buffer, "UTF-8" ));		    
		    }		    
		    s=sb.toString();
		    //System.out.println(s);
		    output.write(s.getBytes("UTF-8"));
		    
		}
	}
}