Java concepts and its programming MCQs

80 MCQs  — Computer Programming MCQs  (Page 6 of 8)

Attempt Java concepts and its programming Quiz
Interfaces helps in which type of inheritance ?
A. Multiple inheritance
B. Multilevel inheritance
C. Hierarchical inheritance
D. None of above
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Automatic type conversion in Java takes place when________________?
A. Two type are compatible and size of destination type is equal of source type.
B. Two type are compatible and size of destination type is larger than source type.
C. Two type are compatible and size of destination type is shorter than source type.
D. All of the above
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All collection classes are available in _________________?
A. Java.util package
B. Java.io package
C. Java.lang package
D. Java.awt package
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Size of float and double in Java is________________?
A. 32 and 64
B. 64 and 64
C. 32 and 32
D. 64 and 32
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What will be output of following program? public class Test{public static void main(String[] args){byte b=127; b++; b++; System.out.println(b); } } ?
A. 127
B. -127
C. 129
D. -129
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Program which executes applet is known as________________?
A. Jvm
B. Virtual machine
C. Applet engine
D. None of above
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How many primitive data types are there in Java ?
A. 5
B. 6
C. 7
D. 8
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How many keywords are available in java ?
A. 24
B. 48
C. 96
D. 192
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Methods that have same name, but different Parameter list and different definition known as_________________?
A. Overriding
B. Overloading
C. Constructor
D. None of these
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Why we use array as a parameter of main method_________________?
A. Can store multiple values
B. It is syntax
C. Both of above
D. None of above
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Word of the Day
11 Jul
Envisage
contemplate or conceive of as a possibility or a desirable future event.
گمان کرنا، تصور کرنا، سوچنا

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