Extracts package name from a fully qualified class name - Java Reflection

Java examples for Reflection:package

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Description

Extracts package name from a fully qualified class name

Demo Code

/*// www  .  ja v a 2s.  com
 * Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 * Licensed 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 com.java2s;

public class Main {


    private static final String DOT_SEPARATOR = ".";
    private static final int STARTING_INDEX = 0;

    /**
     * Extracts package name from a fully qualified class name
     * For example, when 'org.wso2.developerStudio.Test' is given as an argument, it will return 'org.wso2.developerStudio'
     */
    public static String extractPackageName(String fullyQualifiedClassName) {
        int lastIndexOfDot = fullyQualifiedClassName
                .lastIndexOf(DOT_SEPARATOR);
        return fullyQualifiedClassName.substring(STARTING_INDEX,
                lastIndexOfDot);
    }
}

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