maven-compat-3.8.6.jar is the JAR file for Apache Maven 3.8.6 Compact module. The JAR file name may have a typo. Apache Maven is a software project management and comprehension tool.

JAR File Size and Download Location:

File: 288125  06-06-2022 16:16   lib/maven-compat-3.8.6.jar
Download: Apache Maven Website

⏎ org/apache/maven/reporting/MavenReportException.java

package org.apache.maven.reporting;

/*
 * 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.
 */

/**
 * An exception occurring during the execution of a Maven report.
 *
 * @author Brett Porter
 * @author <a href="evenisse@apache.org">Emmanuel Venisse</a>
 */
public class MavenReportException extends Exception
{
    public MavenReportException( String msg )
    {
        super( msg );
    }

    public MavenReportException( String msg, Exception e )
    {
        super( msg, e );
    }
}

⏎ org/apache/maven/reporting/MavenReportException.java

Or download all of them as a single archive file:

File name: maven-compat-3.8.6-src.zip
File size: 215809 bytes
Release date: 2022-06-06
Download 

⇒ maven-embedder-3.8.6.jar - Maven Embedder Module

⇐ maven-builder-support-3.8.6.jar - Builder Support Module

⇑ Downloading and Reviewing Maven JAR Files

⇑⇑ FAQ for Apache Maven