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.

⏎ org/apache/logging/log4j/core/config/plugins/processor/PluginEntry.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.config.plugins.processor;

import java.io.Serializable;

/**
 * Memento object for storing a plugin entry to a cache file.
 */
public class PluginEntry implements Serializable {
    private static final long serialVersionUID = 1L;

    private String key;
    private String className;
    private String name;
    private boolean printable;
    private boolean defer;
    private transient String category;

    public String getKey() {
        return key;
    }

    public void setKey(final String key) {
        this.key = key;
    }

    public String getClassName() {
        return className;
    }

    public void setClassName(final String className) {
        this.className = className;
    }

    public String getName() {
        return name;
    }

    public void setName(final String name) {
        this.name = name;
    }

    public boolean isPrintable() {
        return printable;
    }

    public void setPrintable(final boolean printable) {
        this.printable = printable;
    }

    public boolean isDefer() {
        return defer;
    }

    public void setDefer(final boolean defer) {
        this.defer = defer;
    }

    public String getCategory() {
        return category;
    }

    public void setCategory(final String category) {
        this.category = category;
    }

    @Override
    public String toString() {
        return "PluginEntry [key=" + key + ", className=" + className + ", name=" + name + ", printable=" + printable
                + ", defer=" + defer + ", category=" + category + "]";
    }
}

⏎ org/apache/logging/log4j/core/config/plugins/processor/PluginEntry.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

⇑ Downloading and Reviewing Apache Log4j Packages

⇑⇑ FAQ for Apache Log4j