How does Java deal with multiple conditions inside a single IF statement

Yes, Java (similar to other mainstream languages) uses ~~lazy evaluation~~ short-circuiting which means it evaluates as little as possible.

This means that the following code is completely safe:

if(p != null && p.getAge() > 10)

Also, a || b never evaluates b if a evaluates to true.

Is Java smart enough to skip checking bool2 and bool2 if bool1 was evaluated to false?

Its not a matter of being smart, its a requirement specified in the language. Otherwise you couldn't write expressions like.

if(s != null && s.length() > 0)

if(s == null || s.length() == 0)

BTW if you use & and | it will always evaluate both sides of the expression.

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