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netflix-zeno developed by Netflix

There is a newer version: 2.22.3

/*
 *
 *  Copyright 2013 Netflix, Inc.
 *
 *     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.netflix.zeno.util;

import java.util.HashMap;
import java.util.Map;

/**
 *
 * Utility to identify primitives.
 *
 * @author tvaliulin
 *
 */
public class PrimitiveObjectIdentifier {
    /**
     * Map with primitive wrapper type as key and corresponding primitive
     * type as value, for example: Integer.class -> int.class.
     */
    private static final Map, Class> primitiveWrapperTypeMap = new HashMap, Class>(8);

    static {
        primitiveWrapperTypeMap.put(Boolean.class, boolean.class);
        primitiveWrapperTypeMap.put(Byte.class, byte.class);
        primitiveWrapperTypeMap.put(Character.class, char.class);
        primitiveWrapperTypeMap.put(Double.class, double.class);
        primitiveWrapperTypeMap.put(Float.class, float.class);
        primitiveWrapperTypeMap.put(Integer.class, int.class);
        primitiveWrapperTypeMap.put(Long.class, long.class);
        primitiveWrapperTypeMap.put(Short.class, short.class);
    }

    /**
     * Check if the given class represents a primitive wrapper,
     * i.e. Boolean, Byte, Character, Short, Integer, Long, Float, or Double.
     * @param clazz the class to check
     * @return whether the given class is a primitive wrapper class
     */
    public static boolean isPrimitiveWrapper(Class clazz) {
        return primitiveWrapperTypeMap.containsKey(clazz);
    }

    /**
     * Check if the given class represents a primitive (i.e. boolean, byte,
     * char, short, int, long, float, or double) or a primitive wrapper
     * (i.e. Boolean, Byte, Character, Short, Integer, Long, Float, or Double).
     * @param clazz the class to check
     * @return whether the given class is a primitive or primitive wrapper class
     */
    public static boolean isPrimitiveOrWrapper(Class clazz) {
        return (clazz.isPrimitive() || isPrimitiveWrapper(clazz));
    }
}