Hi friend,


A set is a collection interface. It is connot contain any dublicate element. The Set and SortedSet intefaces describe the properties of sets and the HashSet, LinkedHashSet, and TreeSet classes implement these interfaces.


Here is the simple code.

import java.util.*;

public class HashSetDemo {
static final int MIN = 1;
static final int MAX = 10;

public static void main(String args[]) {
Set<Integer> sethash = new HashSet<Integer>();
for (int i = MAX; i >= MIN; i--) {
sethash.add(new Integer(i*i));
}
System.out.println("HashSet = " + sethash);
Set<Integer> setlink = new LinkedHashSet<Integer>();
for (int i = MAX; i >= MIN; i--) {
setlink.add(new Integer(i*i));
}
System.out.println("LinkedHashSet = " + setlink);
Set<Integer> settree = new TreeSet<Integer>();
for (int i = MAX; i >= MIN; i--) {
settree.add(new Integer(i*i));
}
System.out.println("TreeSet = " + settree);
}
}

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Visit for more information.


http://www.roseindia.net/java/example/java/util/

Thanks.

Amardeep