Source Code for Apache Log4j API

Apache Log4j API provides the interface that applications should code to and provides the adapter components required for implementers to create a logging implementation. Apache Log4j API is a required module to use Apache Log4j.

Bytecode (Java 8) for Apache Log4j API is provided in a separate JAR file like log4j-api-2.14.1.jar.

Source Code files for Apache Log4j API are provided in both binary packge like and source package like You can download them at Apache Log4j Website.

You can also browse Source Code files for Apache Log4j API 2.14.1 below.



 * 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
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the license for the specific language governing permissions and
 * limitations under the license.
package org.apache.logging.log4j.spi;

import java.util.Map;

import org.apache.logging.log4j.ThreadContext;

 * Service provider interface to implement custom MDC behavior for {@link org.apache.logging.log4j.ThreadContext}.
 * <p>
 * Since 2.8, {@code ThreadContextMap} implementations that implement the {@link ReadOnlyThreadContextMap} interface
 * are accessible to applications via the {@link ThreadContext#getThreadContextMap()} method.
 * </p>
public interface ThreadContextMap {

     * Clears the context.
    void clear();

     * Determines if the key is in the context.
     * @param key The key to locate.
     * @return True if the key is in the context, false otherwise.
    boolean containsKey(final String key);

     * Gets the context identified by the <code>key</code> parameter.
     * <p>This method has no side effects.</p>
     * @param key The key to locate.
     * @return The value associated with the key or null.
    String get(final String key);

     * Gets a non-{@code null} mutable copy of current thread's context Map.
     * @return a mutable copy of the context.
    Map<String, String> getCopy();

     * Returns an immutable view on the context Map or {@code null} if the context map is empty.
     * @return an immutable context Map or {@code null}.
    Map<String, String> getImmutableMapOrNull();

     * Returns true if the Map is empty.
     * @return true if the Map is empty, false otherwise.
    boolean isEmpty();

     * Puts a context value (the <code>o</code> parameter) as identified
     * with the <code>key</code> parameter into the current thread's
     * context map.
     * <p>If the current thread does not have a context map it is
     * created as a side effect.</p>
     * @param key The key name.
     * @param value The key value.
    void put(final String key, final String value);

     * Removes the context identified by the <code>key</code>
     * parameter.
     * @param key The key to remove.
    void remove(final String key);



Or download all of them as a single archive file:

File name: log4j-api-2.14.1-sources.jar
File size: 264773 bytes
Release date: 2021-03-06


Source Code for Apache Log4j Core Implementation

Downloading Apache Log4j Binary Package

Downloading and Reviewing Apache Log4j Packages

⇑⇑ FAQ for Apache Log4j

2015-11-17, 31143👍, 0💬