Re: What is wrong with my program?

From:

SamuelXiao <foolsmart2005@gmail.com>

Newsgroups:

comp.lang.java.help

Date:

Tue, 2 Sep 2008 20:54:10 -0700 (PDT)

Message-ID:

<3230c188-93a8-4d2e-9ff1-0d2157704138@a8g2000prf.googlegroups.com>

On Sep 2, 7:37 pm, Roedy Green <see_webs...@mindprod.com.invalid>
wrote:

On Mon, 1 Sep 2008 02:54:20 -0700 (PDT), SamuelXiao
<foolsmart2...@gmail.com> wrote, quoted or indirectly quoted someone
who said :

ublic class NameComparator implements Comparator{
   public int compareObject(Object cust, Object anotherStudent){
       char[] shortName1 = ((Student) cust).getName();
       char[] shortName2 = ((Student) anotherStudent).getName();

       String sName1 = new String(shortName1);
       String sName2 = new String(shortName2);

       if(!(sName1.equals(sName2))){
           return sName1.compareTo(sName2);
       }

       return 0;

   }

   public int compare(Object o1, Object o2) {
       throw new UnsupportedOperationException("Not supported yet.");
   }

this isn't a Comparator. Seehttp://mindprod.com/jgloss/comparator.htmlfor how to implement one
properly.
--

Roedy Green Canadian Mind Products
The Java Glossaryhttp://mindprod.com

Actually, the lab requires me that I can't use the classes that
implement the Collection interface, except for Array class. The above
website seems to use this Collection.sort(). Moreover, I tried to
change some code, but the problem still exists. Are there any better
ways to correct my program?