Java Reflection Primitive getPrimitiveClass(Class boxedClass)

Description

Return the primitive counterpart class for the given boxed type.

License

Apache License

Parameter

Parameter	Description
boxedClass	Boxed type class (not-null)
T	Type

Return

Primitive counterpart class, or null if such class does not exist. (maybe-null)

Declaration

@SuppressWarnings("unchecked")
public static <T> Class<T> getPrimitiveClass(Class<T> boxedClass) 

Method Source Code

//package com.java2s;
/*/*from  w w  w.  j  a va 2  s . c  om*/
 *  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.
 *
 */

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

public class Main {
    private static final Map<Class<?>, Class<?>> primitiveCounterparts = new HashMap<Class<?>, Class<?>>() {
        {
            put(Byte.class, byte.class);
            put(Short.class, short.class);
            put(Integer.class, int.class);
            put(Long.class, long.class);
            put(Float.class, float.class);
            put(Double.class, double.class);
            put(Character.class, char.class);
        }
    };

    /**
     * <p>Return the primitive counterpart class for the given boxed type.</p>
     *
     * @param boxedClass Boxed type class (not-null)
     * @param <T>        Type
     * @return Primitive counterpart class, or <code>null</code>
     *         if such class does not exist. (maybe-null)
     */
    @SuppressWarnings("unchecked")
    public static <T> Class<T> getPrimitiveClass(Class<T> boxedClass) {
        return (Class<T>) primitiveCounterparts.get(boxedClass);
    }
}

Related

1. getDefaultValueForPrimitive(Class type)
2. getNullOrPrimitiveDefault(Class to)
3. getPrimitive(final String classname)
4. getPrimitiveClass(Class wrapper)
5. getPrimitiveClass(Class wrapperClazz)
6. getPrimitiveClass(String name)
7. getPrimitiveClass(String primitiveClassName)
8. getPrimitiveClass(String primitiveName)
9. getPrimitiveClassIfWrapper(Class clazz)