regarding scjp 1.5

[anveshana bandu]

hai

Please explain this...........very urgent....

1. public class EqualsTest{
2. public static void main(String args[]){
3. Long L = new Long( 7 );
4. Integer J = new Integer( 7 ) ;
5. if( L.equals( J )) System.out.println("Equal");
6. else System.out.println("Not Equal");
7. }
8. }

The out put is "Not Equal".....How???
Content is equal............
I did not understood how equals method checks whether two objects are equal...
Please explain how equals() method works....

[Mirko Bonasorte]

Because their classes are different (a Long is NOT an Integer).

[Jesper de Jong]

Anveshana: Please quote your sources.

[srk bhushan]

Here the two classes are different, you cant compare to class objects with equals method. If you want you have to overload the equals method in your class. Using equals method you can compare primitive and reference variable's equality but not objects.

[venkat kaka]

Hi,
equals method works on the data of the objects if both object are of the same class.

[anveshana bandu]

Thank you very much to you all for giving reply to my doubt...