Java Reflection Primitive isNumber(Class type)

Description

is Number

License

Apache License

Declaration

public static boolean isNumber(Class type) 

Method Source Code

//package com.java2s;
/**/*from  w  ww.  j av a  2s  .  c  om*/
 * Copyright (C) 2008 Mathieu Carbou <mathieu.carbou@gmail.com>
 *
 * 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.
 */

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

public class Main {
    private static final Map<Class, Class> primitiveWrappers = new HashMap<Class, Class>(8);

    public static boolean isNumber(Class type) {
        return Number.class.isAssignableFrom(type)
                || type.isPrimitive() && Number.class.isAssignableFrom(primitiveWrappers.get(type));
    }

    public static boolean isNumber(Object object) {
        return Number.class.isAssignableFrom(object.getClass());
    }
}

Related

1. getWrapperClassIfPrimitive(final Class clazz)
2. isAJavaPrimitiveArrayClass(final Class type)
3. isBoxed(Class boxedClass, Class primitiveClass)
4. isExtPrimitive(Class clazz)
5. isNumber(Class type)
6. isNumber(Class clazz)
7. isNumeric(Class operandClass)
8. isNumericPrimitive(Class type)
9. isNumericType(Class aNumberClass)