1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache license, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the license for the specific language governing permissions and
15 * limitations under the license.
16 */
17 package org.apache.logging.log4j.core.helpers;
18
19 /**
20 * Helps deal with integers.
21 */
22 public class Integers {
23
24 /**
25 * Parses the string argument as a signed decimal integer.
26 *
27 * @param s
28 * a {@code String} containing the {@code int} representation to parse, may be {@code null} or {@code ""}
29 * @param defaultValue
30 * the return value, use {@code defaultValue} if {@code s} is {@code null} or {@code ""}
31 * @return the integer value represented by the argument in decimal.
32 * @throws NumberFormatException
33 * if the string does not contain a parsable integer.
34 */
35 public static int parseInt(String s, int defaultValue) {
36 return Strings.isEmpty(s) ? defaultValue : Integer.parseInt(s);
37 }
38
39 /**
40 * Parses the string argument as a signed decimal integer.
41 *
42 * @param s
43 * a {@code String} containing the {@code int} representation to parse, may be {@code null} or {@code ""}
44 * @return the integer value represented by the argument in decimal.
45 * @throws NumberFormatException
46 * if the string does not contain a parsable integer.
47 */
48 public static int parseInt(String s) {
49 return parseInt(s, 0);
50 }
51 }