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Various Java Utils

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/**
 * commons - Various Java Utils
 * Copyright (C) 2009  Adrian Cristian Ionescu - https://github.com/acionescu
 *
 * 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 net.segoia.util.data;

import java.util.List;

public class ListUtil {
    public static int getNumberOfInstancesInList(List list, Object obj) {
	if(list == null) {
	    return 0;
	}
	int count=0;
	boolean objIsNull = (obj==null)?true:false;
	for(Object o : list) {
	    if(objIsNull) {
		if(o == null) {
		    count++;
		}
	    }
	    else {
		if(obj.equals(o)) {
		    count++;
		}
	    }
	}
	return count;
    }
}