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SetEx setEx1 = new SetEx("Java");
String str1 = new String("Java");
String str2 = new String("Java");
s.add(setEx);
s.add(setEx1);
s.add(str1);
s.add(str2);
System.out.println("No Of elements in the Set is " + s.size());
}
What is the result and how?">import java.util.*;public class SetEx { private String str; SetEx(String s) { str = s } public static void main(String[] ar) { Set s = new HashSet(); SetEx setEx = new SetEx("Java"); SetEx setEx1 = new SetEx("Java"); String str1 = new String("Java"); String str2 = new String("Java"); s.add(setEx); s.add(setEx1); s.add(str1); s.add(str2); System.out.println("No Of elements in the Set is " + s.size()); }What is the result and how?
james.vinett
- Aug 24th, 2009
The result is 3 even though you would want it to be 2.You MUST override equals() and hashCode() for proper use of add in HashSet.
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why do we call java.util.* package as a framework.thanks Moorthi M
meetnaveen4u
- Jul 31st, 2006
The Util package bascially contains Collection as its part. A collections framework is a unified architecture for representing and manipulating collections. All collections frameworks contain the foll...
