Java Collection Check isCollection(Object object)

Description

Returns true if the given Object is not null and a Collection derived type

License

Apache License

Parameter

Parameter	Description
object	a parameter

Declaration

public static boolean isCollection(Object object) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2011 Danny Kunz//from   w w  w . j  a va  2 s  . c o m
 * 
 * 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.Collection;

public class Main {
    /**
     * Returns true if the given {@link Object} is not null and a {@link Collection} derived type
     * 
     * @param object
     * @return
     */
    public static boolean isCollection(Object object) {
        return isAssignableFromInstance(Collection.class, object);
    }

    /**
     * Returns true if the given target {@link Class} is {@link Class#isAssignableFrom(Class)} from the given {@link Object}. In
     * other words is the assignment "<code>TargetType target = (TargetType) object;</code>" valid
     * 
     * @param targetType
     * @param object
     * @return
     */
    public static boolean isAssignableFromInstance(Class<?> targetType, Object object) {
        return object != null && targetType != null && targetType.isAssignableFrom(object.getClass());
    }
}

Related

1. isCollection(Object ob)
2. isCollection(Object obj)
3. isCollection(Object obj)
4. isCollection(Object obj)
5. isCollection(Object object)
6. isCollection(Object value)
7. isCollection(String type)
8. isCollectional(final Class type)
9. isCollectionOrArray(Class type)