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/impl/ExtendedClassInfo.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.impl;

import java.io.Serializable;
import java.util.Objects;

import org.apache.logging.log4j.core.pattern.PlainTextRenderer;
import org.apache.logging.log4j.core.pattern.TextRenderer;

/**
 * Class and package data used with a {@link StackTraceElement} in a {@link ExtendedStackTraceElement}.
 */
public final class ExtendedClassInfo implements Serializable {

    private static final long serialVersionUID = 1L;

    private final boolean exact;

    private final String location;

    private final String version;

    /**
     * Constructs a new instance.
     *
     * @param exact
     * @param location
     * @param version
     */
    public ExtendedClassInfo(final boolean exact, final String location, final String version) {
        this.exact = exact;
        this.location = location;
        this.version = version;
    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (!(obj instanceof ExtendedClassInfo)) {
            return false;
        }
        final ExtendedClassInfo other = (ExtendedClassInfo) obj;
        if (this.exact != other.exact) {
            return false;
        }
        if (!Objects.equals(this.location, other.location)) {
            return false;
        }
        if (!Objects.equals(this.version, other.version)) {
            return false;
        }
        return true;
    }

    public boolean getExact() {
        return this.exact;
    }

    public String getLocation() {
        return this.location;
    }

    public String getVersion() {
        return this.version;
    }

    @Override
    public int hashCode() {
        return Objects.hash(exact, location, version);
    }

    public void renderOn(final StringBuilder output, final TextRenderer textRenderer) {
        if (!this.exact) {
            textRenderer.render("~", output, "ExtraClassInfo.Inexact");
        }
        textRenderer.render("[", output, "ExtraClassInfo.Container");
        textRenderer.render(this.location, output, "ExtraClassInfo.Location");
        textRenderer.render(":", output, "ExtraClassInfo.ContainerSeparator");
        textRenderer.render(this.version, output, "ExtraClassInfo.Version");
        textRenderer.render("]", output, "ExtraClassInfo.Container");
    }

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder();
        renderOn(sb, PlainTextRenderer.getInstance());
        return sb.toString();
    }

}

⏎ org/apache/logging/log4j/core/impl/ExtendedClassInfo.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
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