Java Is Jar File isJar(String file)

Description

is Jar

License

Apache License

Declaration

public static boolean isJar(String file) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2015-2016 - CNRS (Centre National de Recherche Scientifique)
 *
 * 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.//from www.  j  av a2 s .c om
 *
 *******************************************************************************/

import java.io.IOException;

import java.util.jar.JarEntry;
import java.util.jar.JarFile;

public class Main {
    public static boolean isJar(String file) {
        try {
            JarFile jar = new JarFile(file);
            JarEntry entry = jar.getJarEntry("META-INF/MANIFEST.MF");
            jar.close();
            return entry != null;
        } catch (IOException e) {
            return false;
        }
    }
}

Related

1. isJar(File file)
2. isJar(File file)
3. isJar(File file)
4. isJar(final File element)
5. isJar(InputStream is)
6. isJarFile(File f)
7. isJarFile(File file)
8. isJarFile(File jar)