find Object in a Collection via Comparator - Java java.util

Java examples for java.util:Collection Element

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Description

find Object in a Collection via Comparator

Demo Code

/* /*from ww w .  j  a v a 2 s . c  o  m*/
  Copyright (C) 2013 Raquel Pau and Albert Coroleu.
         
 Walkmod is free software: you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
         
 Walkmod is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
         
 You should have received a copy of the GNU Lesser General Public License
 along with Walkmod.  If not, see <http://www.gnu.org/licenses/>.*/
//package com.book2s;
import java.util.Collection;
import java.util.Comparator;
import java.util.Iterator;

public class Main {
    public static Object findObject(Collection<?> c, Object o,
            Comparator cmp) {
        if (c != null && o != null && cmp != null) {
            Iterator<?> it = c.iterator();
            while (it.hasNext()) {
                Object current = it.next();
                if (o.getClass().equals(current.getClass())) {
                    if (cmp.compare(current, o) == 0) {
                        return current;
                    }
                }
            }
        }
        return null;
    }
}

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