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I am confused

 
Greenhorn
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/*
Value of a is:0
Value of A is:2
Value of a is:0
Value of A is:12
ob1.a:2
ob2.a:12
Value of a is:0
Value of A is:22
ob2.a after second increment22
*/
 
Bartender
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Try tracing through the code like this:

- Line 18 creates a new Test, passing in i = 2. That prints the initial value of a (= 0), then adds 2 to that and prints that. So a = 2.
- Line 20 calls incr() on that first Test. This creates a new Test, passing in i = 12. Again, this prints the initial value of a (remember it's a new object, so it's zero again), then adds 2 to that and prints that. So a = 12.
- Etc. Remember that each call to incr creates a new Test object.

(I think you're missing part of the output)
 
Nakul P. Patel
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hi,mathew.
First,I want to thank you.I am new to java,and confused.
But you are genius and a good teacher also.
Thank you,again.
 
Matthew Brown
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You're welcome .
 
Ranch Hand
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I think you're going to want to spend some time -- a couple months, at the least -- with a beginning Java book, before you jump into the deep end studying SCJP. Otherwise you are going to be very, very frustrated.
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