/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.
*/
package org.elasticsearch.common;
import java.lang.reflect.Modifier;
public class Classes {
/**
* The package separator character '.'
*/
private static final char PACKAGE_SEPARATOR = '.';
/**
* Determine the name of the package of the given class:
* e.g. "java.lang" for the <code>java.lang.String</code> class.
*
* @param clazz the class
* @return the package name, or the empty String if the class
* is defined in the default package
*/
public static String getPackageName(Class<?> clazz) {
String className = clazz.getName();
int lastDotIndex = className.lastIndexOf(PACKAGE_SEPARATOR);
return (lastDotIndex != -1 ? className.substring(0, lastDotIndex) : "");
}
public static boolean isInnerClass(Class<?> clazz) {
return !Modifier.isStatic(clazz.getModifiers())
&& clazz.getEnclosingClass() != null;
}
public static boolean isConcrete(Class<?> clazz) {
int modifiers = clazz.getModifiers();
return !clazz.isInterface() && !Modifier.isAbstract(modifiers);
}
private Classes() {}
}