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Core Java Interview Questions and Answers

Ques 186. What are the approaches that you will follow for making a program very efficient?

Ans. By avoiding too much of static methods avoiding the excessive and unnecessary use of synchronized methods Selection of related classes based on the application (meaning synchronized classes for multiuser and non-synchronized classes for single user) Usage of appropriate design patterns Using cache methodologies for remote invocations Avoiding creation of variables within a loop and lot more.

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Ques 187. What is a DatabaseMetaData?
Ans. Comprehensive information about the database as a whole.
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Ques 188. What is Locale?
Ans. A Locale object represents a specific geographical, political, or cultural region
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Ques 189. How will you load a specific locale?
Ans. Using ResourceBundle.getBundle(');
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Ques 190. What is JIT and its use?
Ans. Really, just a very fast compiler' In this incarnation, pretty much a one-pass compiler '?? no offline computations. So you can'??t look at the whole method, rank the expressions according to which ones are re-used the most, and then generate code. In theory terms, it'??s an on-line problem.
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