java SimpleDateFormat で UTC 取り扱い例

HelloSimpleDateFormat4Main.java

package hello;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

public class HelloSimpleDateFormat4Main {

    public static void main(String[] args) throws Exception {
        // Fri May 13 01:18:07 UTC 2016

        String s = "Fri May 13 01:18:07 UTC 2016";

        SimpleDateFormat formatter = new SimpleDateFormat(
                "EEE MMM dd HH:mm:ss z yyyy", new Locale("en"));

        SimpleDateFormat formatter2 = new SimpleDateFormat(
                "yyyy-MM-dd HH:mm:ss z", new Locale("en"));
        {
            Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
            formatter2.setTimeZone(cal.getTimeZone());
        }
        {
            Date d = formatter.parse(s);
            System.out.println(d);
            System.out.println(formatter2.format(d));
        }

    }

}

実行結果

Fri May 13 10:18:07 JST 2016
2016-05-13 01:18:07 UTC