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Reference variables, how does this code work

 
Greenhorn
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Hi can anyone please help in understanding the below code:-

please tell me what is the meaning of a1.b1, a1.b2, a2.b2?? what they are refering to? Please explain
 
Java Cowboy
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a1 refers to an object of class Alpha.
a2 refers to another object of class Alpha.

Class Alpha has two member variables, b1 and b2.

a1.b1 refers to the member variable b1 in the Alpha object that a1 refers to.
a1.b2 refers to the member variable b2 in the Alpha object that a1 refers to.
a2.b2 refers to the member variable b2 in the Alpha object that a2 refers to.

These are fundamental concepts about classes. See Classes in Oracle's Java Tutorials to learn how classes work.
 
Rancher
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"class" or "Class" ?
 
author
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Please QuoteYourSources.

Henry
 
Marshal
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Henry Wong wrote:Please QuoteYourSources.

Henry

Agree. Please read this link. That is required for continued discussion.
 
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