Java Collection Equal equalContent(final Collection<?> a, final Collection<?> b)

Description

If both are null will throw an error.

License

Open Source License

Declaration

static public final boolean equalContent(final Collection<?> a, final Collection<?> b)

Method Source Code

//package com.java2s;
/**/* ww  w  .jav  a2 s.c o m*/
    
TrakEM2 plugin for ImageJ(C).
Copyright (C) 2005-2009 Albert Cardona and Rodney Douglas.
    
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation (http://www.gnu.org/licenses/gpl.txt )
    
This program 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 General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
    
You may contact Albert Cardona at acardona at ini.phys.ethz.ch
Institute of Neuroinformatics, University of Zurich / ETH, Switzerland.
    
*/

import java.util.Collection;

import java.util.Iterator;

import java.util.Map;

public class Main {
    /** If both are null will throw an error. */
    static public final boolean equalContent(final Collection<?> a, final Collection<?> b) {
        if ((null == a && null != b) || (null != b && null == b))
            return false;
        if (a.size() != b.size())
            return false;
        for (Iterator<?> ia = a.iterator(), ib = b.iterator(); ia.hasNext();) {
            if (!ia.next().equals(ib.next()))
                return false;
        }
        return true;
    }

    /** If both are null will throw an error. */
    static public final boolean equalContent(final Map<?, ?> a, final Map<?, ?> b) {
        if ((null == a && null != b) || (null != b && null == b))
            return false;
        if (a.size() != b.size())
            return false;
        for (final Map.Entry<?, ?> e : a.entrySet()) {
            final Object ob = b.get(e.getKey());
            if (null != ob && !ob.equals(e.getValue()))
                return false;
            if (null != e.getValue() && !e.getValue().equals(ob))
                return false;
            // if both are null that's ok
        }
        return true;
    }
}

Java Collection Equal equalContent(final Collection a, final Collection b)

Description

License

Declaration

Method Source Code

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