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Q57. Can a for statement loop indefinitely?
Yes, a for statement can loop indefinitely. For example, consider the following: for(;;) ;

Q58. What are order of precedence and associativity, and how are they used?
Order of precedence determines the order in which operators are evaluated in expressions. Associatity determines whether an expression is evaluated left-to-right or right-to-left

Q59. When a thread blocks on I/O, what state does it enter?
A thread enters the waiting state when it blocks on I/O.

Q60. To what value is a variable of the String type automatically initialized?
The default value of an String type is null.