Java Collection Check isCollection(Object ob)

Description

Check if a current object can be cast to collection.

License

Apache License

Parameter

Parameter	Description
ob	current object

Return

flag if it's a collection

Declaration

public static boolean isCollection(Object ob) 

Method Source Code

//package com.java2s;
/*/*from w w  w . j  av  a2  s . com*/
 * #%L
 * ff4j-core
 * %%
 * Copyright (C) 2013 - 2014 Ff4J
 * %%
 * 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.
 * #L%
 */

import java.util.Collection;

import java.util.Map;

public class Main {
    /**
     * Check if a current object can be cast to collection.
     * 
     * @param ob
     *      current object
     * @return
     *      flag if it's a collection
     */
    public static boolean isCollection(Object ob) {
        return ob != null && isClassCollection(ob.getClass());
    }

    /**
     * Check if a current class can be cast to collection.
     * 
     * @param c
     *      current class
     * @return
     *      flag if it's a collection
     */
    public static boolean isClassCollection(Class<?> c) {
        return Collection.class.isAssignableFrom(c) || Map.class.isAssignableFrom(c);
    }
}

Related

1. isCollection(Class clazz)
2. isCollection(Class fieldClass)
3. isCollection(final Object collection)
4. isCollection(final Object obj)
5. isCollection(final Object value)
6. isCollection(Object obj)
7. isCollection(Object obj)
8. isCollection(Object obj)
9. isCollection(Object object)