Java tutorial
//package com.java2s; /* * Copyright (C) 2013 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import android.text.format.DateUtils; public class Main { public static void appendGmtOffset(StringBuilder sb, final int gmtOffset) { sb.append("GMT"); if (gmtOffset < 0) { sb.append('-'); } else { sb.append('+'); } final int p = Math.abs(gmtOffset); sb.append(p / DateUtils.HOUR_IN_MILLIS); // Hour final int min = (p / (int) DateUtils.MINUTE_IN_MILLIS) % 60; if (min != 0) { // Show minutes if non-zero sb.append(':'); if (min < 10) { sb.append('0'); } sb.append(min); } } }