Here you can find the source of minuteToMillis(long minute)
public static final long minuteToMillis(long minute)
//package com.java2s; public class Main { public static final long minuteToMillis(long minute) { if (minute < 0L) { return 0L; }//from w w w . j a v a2 s.c o m return minute * 60000L; } }