Java concepts and its programming MCQs

80 MCQs — Computer Programming MCQs (Page 1 of 8)

Practice Java concepts and its programming MCQs with correct answers and explanations. These questions are from the Computer Programming MCQs section.

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Computer Programming MCQs Subcategories

Java is a _______________language?

A. Moderate typed
B. Strogly typed
C. Weakly typed
D. None of these

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Which class cannot be subclassed (or extended) in java ?

A. Final class
B. Abstract class
C. Parent class
D. None of above

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Which statement is static and synchronized in JDBC API ?

A. Getconnection()
B. Executequery()
C. Preparecall()
D. Executeupdate()

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Inheritance means ?

A. Sub class create object of super class
B. Sub class extends base class
C. Sub class extends super class
D. All of the above

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Java intermediate code is known as_________________?

A. Byte code
B. First code
C. Mid code
D. None of above

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What is jdb_________________?

A. Java disassemble
B. Java interpreter
C. Java compiler
D. Java debugger

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In which we clone the object and their constituent parts_______________?

A. Deep cloning
B. Shallow cloning
C. Both of above
D. None of above

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Object which can store group of other objects is called___________________?

A. Package
B. Wrapper
C. Java object
D. Collection object

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Which of the following automatic type conversion will be possible ?

A. Byte to int
B. Short to int
C. Long to int
D. Int to long

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Which is the predefined package ?

A. Lang package
B. Util package
C. Io package
D. All of above

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