maven-compat-3.5.4.jar is the JAR file for Apache Maven 3.5.4 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: 2018-06-17 19:34        290368  lib\maven-compat-3.5.4.jar
Download: Apache Maven Website

⏎ org/apache/maven/usability/plugin/ExpressionDocumentationException.java

package org.apache.maven.usability.plugin;

/*
 * 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.
 */

/**
 * ExpressionDocumentationException
 */
public class ExpressionDocumentationException
    extends Exception
{
    static final long serialVersionUID = 1;

    public ExpressionDocumentationException( String message, Throwable cause )
    {
        super( message, cause );
    }

    public ExpressionDocumentationException( String message )
    {
        super( message );
    }

}

⏎ org/apache/maven/usability/plugin/ExpressionDocumentationException.java

Or download all of them as a single archive file:

File name: maven-compat-3.5.4-src.zip
File size: 206665 bytes
Release date: 2018-06-17
Download 

⇒ maven-embedder-3.5.4.jar - Maven Embedder Module

⇐ maven-core-3.5.4.jar - Maven Core Module

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