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Wrapper Class.

Bhalotia Kunal
Greenhorn

Joined: May 16, 2005
Posts: 9


can you please explain me which line makes a compile time error.

thanks,
Deepak
Barry Gaunt
Ranch Hand

Joined: Aug 03, 2002
Posts: 7729
What happens if you compile the code? What error message do you get? For what line?


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Bhalotia Kunal
Greenhorn

Joined: May 16, 2005
Posts: 9
Hi Barry,

The Answer is...
Compile-time error at 2.
Compile-time error at 4.

Thanks
Deepak
Vishnu Prakash
Ranch Hand

Joined: Nov 15, 2004
Posts: 1026
Ans:2 and 4

Why 2? Because the return type of intValue() is int and not Integer

Why 4?
parseType(String s)

In your example

Integer.parseInt(Integer.valueOf("1").intValue())

Integer.valueOf("1").intValue() return an int. But parseInt()
expects a String as argument so compiler error.


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Barry Gaunt
Ranch Hand

Joined: Aug 03, 2002
Posts: 7729
Good. Now try it with the Java 5.0 compiler.

You will see that this is one of the mock exam questions that gets broken with Java 5.0.
 
Consider Paul's rocket mass heater.
 
subject: Wrapper Class.