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Source Code for Apache Log4j Core Implementation
Apache Log4j Core Implementation provides the functional components of the logging system. Users are free to create their own plugins and include them in the logging configuration. Apache Log4j Core is a required module to use Apache Log4j.
Bytecode (Java 8) for Apache Log4j Core Implementation is provided in a separate JAR file like log4j-core-2.14.1.jar.
Source Code files for Apache Log4j API are provided in both binary packge like apache-log4j-2.14.1-bin.zip and source package like apache-log4j-2.14.1-src.zip. You can download them at Apache Log4j Website.
You can also browse Source Code files for Apache Log4j Core Implementation 2.14.1 below.
✍: FYIcenter.com
⏎ org/apache/logging/log4j/core/util/Integers.java
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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. */ package org.apache.logging.log4j.core.util; import org.apache.logging.log4j.util.Strings; /** * Helps deal with integers. */ public final class Integers { private static final int BITS_PER_INT = 32; private Integers() { } /** * Parses the string argument as a signed decimal integer. * * @param s a {@code String} containing the {@code int} representation to parse, may be {@code null} or {@code ""} * @param defaultValue the return value, use {@code defaultValue} if {@code s} is {@code null} or {@code ""} * @return the integer value represented by the argument in decimal. * @throws NumberFormatException if the string does not contain a parsable integer. */ public static int parseInt(final String s, final int defaultValue) { return Strings.isEmpty(s) ? defaultValue : Integer.parseInt(s); } /** * Parses the string argument as a signed decimal integer. * * @param s a {@code String} containing the {@code int} representation to parse, may be {@code null} or {@code ""} * @return the integer value represented by the argument in decimal. * @throws NumberFormatException if the string does not contain a parsable integer. */ public static int parseInt(final String s) { return parseInt(s, 0); } /** * Calculate the next power of 2, greater than or equal to x. * <p> * From Hacker's Delight, Chapter 3, Harry S. Warren Jr. * * @param x Value to round up * @return The next power of 2 from x inclusive */ public static int ceilingNextPowerOfTwo(final int x) { return 1 << (BITS_PER_INT - Integer.numberOfLeadingZeros(x - 1)); } }
⏎ org/apache/logging/log4j/core/util/Integers.java
Or download all of them as a single archive file:
File name: log4j-core-2.14.1-sources.jar File size: 1281358 bytes Release date: 2021-03-06 Download
⇒ Source Code for Apache Log4j JDK Logging Adapter
⇐ Source Code for Apache Log4j API
2015-11-03, 85511👍, 0💬
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