1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.tv.tuner.util; 18 19 /** 20 * Utility class for handling {@link String}. 21 */ 22 public final class StringUtils { 23 StringUtils()24 private StringUtils() { } 25 26 /** 27 * Returns compares two strings lexicographically and handles null values quietly. 28 */ compare(String a, String b)29 public static int compare(String a, String b) { 30 if (a == null) { 31 return b == null ? 0 : -1; 32 } 33 if (b == null) { 34 return 1; 35 } 36 return a.compareTo(b); 37 } 38 } 39