1 /* 2 * Copyright (C) 2023 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.queryable.util; 18 19 /** Utilities for {@link String}*/ 20 public final class StringUtils { 21 StringUtils()22 private StringUtils() {} 23 24 /** Check whether the string is null or empty. */ isNullOrEmpty(String str)25 public static boolean isNullOrEmpty(String str) { 26 return str == null || str.isEmpty(); 27 } 28 29 /** Ensure string ends with specified char. */ ensureEndsWith(String str, char ch)30 public static String ensureEndsWith(String str, char ch) { 31 if (str.charAt(str.length() - 1) == ch) { 32 return str; 33 } 34 return str + ch; 35 } 36 37 } 38