Source Code for Apache Log4j 1.2 Bridge

Apache Log4j 1.2 Bridge allows applications coded to use Log4j 1.2 API to use Log4j 2 instead.

Bytecode (Java 8) for Apache Log4j 1.2 Bridge is provided in a separate JAR file like log4j-1.2-api-2.14.1.jar.

Source Code files for Apache Log4j 1.2 Bridge 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 1.2 Bridge 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.log4j.spi;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.List;

 * Class Description goes here.
public class ThrowableInformation implements {

    static final long serialVersionUID = -4748765566864322735L;

    private transient Throwable throwable;
    private Method toStringList;

    public ThrowableInformation(Throwable throwable) {
        this.throwable = throwable;
        Method method = null;
        try {
            Class<?> throwables = Class.forName("org.apache.logging.log4j.core.util.Throwables");
            method = throwables.getMethod("toStringList", Throwable.class);
        } catch (ClassNotFoundException | NoSuchMethodException ex) {
            // Ignore the exception if Log4j-core is not present.
        this.toStringList = method;

    public Throwable getThrowable() {
        return throwable;

    public synchronized String[] getThrowableStrRep() {
        if (toStringList != null && throwable != null) {
            try {
                List<String> elements = (List<String>) toStringList.invoke(null, throwable);
                if (elements != null) {
                    return elements.toArray(new String[0]);
            } catch (IllegalAccessException | InvocationTargetException ex) {
                // Ignore the exception.
        return null;



Or download all of them as a single archive file:

File name: log4j-1.2-api-2.14.1-sources.jar
File size: 168047 bytes
Release date: 2021-03-06


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