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Wrapper Classes

 
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can anyone of you please give me the result for the below code and explain why. I thought the result was false and true.

public class wrappers {
public static void main(String [] ar){
Integer a,b,c=2;
a=new Integer(3);
b=new Integer(4);
c*=a+b;
int d=14;
System.out.println(c==d);
System.out.println(c.equals(d));
}
}


Thanks in advance.
Sampath
 
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You yuorself can get result while compiling............if you have any doubt,welcome!
 
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Hi,

First and foremost, your program doesn't compile so how can you say that the result is false.

Please make your program runnable first.
 
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I should run in java 1.5
 
sampath garapati
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Thank you.

May be this will run in java 1.5


sampath
 
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Halo Sampath!

i could execute ur program n the o/p
is:
true
true

i would shortly get back to u with xplaination.

regards,
Haritha.
 
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The code will not compile in JDK1.4

Compilor error
 
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Here, c==d is equivalent to c.intValue()==d

This is because of Autoboxing/Unboxing feature present in java 1.5

Hope this helps.

- Lalitha.
 
haritha yellapu
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Hi All!

what lalitha has written is true!
its bcoz of autoboxing feature the comparision
is true n it is only in java1.5.


regards,
Haritha.
 
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