MyLittleDecoder.java

import java.net.URLDecoder;
import java.io.UnsupportedEncodingException;

public class MyLittleDecoder {
	public String decode(String str) {
		String retstr = "";

		try {
			retstr = URLDecoder.decode(str, "Windows-31J");
		} catch (UnsupportedEncodingException e) {
			retstr = "exception...";
		}

		return retstr;
	}

	public static void main(String[] args) {
		MyLittleDecoder obj = new MyLittleDecoder();

		for (String arg : args) {
			System.out.println(obj.decode(arg));
		}
	}
}