Question 1

Who is the loose character in java??

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class
interface
package
data type

Answer

Correct Option: B

Question 2

JAVA 1.4 introduced the concept of Generics?

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True
False

Answer

Correct Option: B

Question 3

PHP is a client- side scripting language?

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True
False

Answer

Correct Option: B

Question 4

PHP stands for?

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Pre Hypertext Processor
Preprocessor Hypertext
Hypertext Preprocessor
Processor Hypertext Pre

Answer

Correct Option: C

Question 5

PHP is a loosely typed language?

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True
False

Answer

Correct Option: A

Question 6

Which are two statements for outputing the text in PHP?

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print and display
display and echo
println and display
echo and print

Answer

Correct Option: D

Question 7

Following code will result in: int a = 3.5;

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Compilation error
Runtime error
a being 3.5
a being 3

Answer

Correct Option: A

Question 8

Following code will result in: int a1 = 5; double a2 = (float)a1;

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Compilation error
Runtime error
Runtime exception
No error

Answer

Correct Option: D

Question 9

Following code will result in: int a = 9/0;

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Compilation error: Divisions must be in a try block.
Compilation error: DivideByZeroException
Runtime Exception - correct answer
No Error: a is NaN

Answer

Correct Option: C

Question 10

Following code will result in: float a = 9/0;

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Compilation error: Divisions must be in a try block
Compilation error: DivideByZeroException
Runtime Exception
No Error: a is NaN

Answer

Correct Option: D

Question 11

Following code will result in: class A { int b = 1; public static void main(String [] args) { System.out.println("b is " + b); }}

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Compilation error
Runtime Error
Runtime Exception
Output of b is 1

Answer

Correct Option: A

Question 12

Following code will result in: class A { public static void main(String [] args) {B b = new A(); }} class B extends A {}

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Compile error
Runtime Exception
No error
Rintime Error

Answer

Correct Option: A

Question 13

Following code will result in: class A { public static void main(String [] args) {A a = new B(); }} class B extends A {}

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Compiler error
Runtime Exception
No errors
Runtime Error

Answer

Correct Option: C

Question 14

If class A implements an interface does it need to implement all methods of that interface?

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Yes, always it should implement
No, Never
No, Not when A is abstract
None of the above

Answer

Correct Option: C

Question 15

The methods wait(), notify() and notifyAll() in Object need to be called from synchronized pieces of code.

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true
false
Depends on situation
none of the above

Answer

Correct Option: B

Question 16

A class cannot be declared

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volatile
private
default
static

Answer

Correct Option: B

Question 17

mainn() { main(); } This loop runs upto???

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Infinite loop
Until Stack Underflow
Until Machine Hangs
Stack Overflow

Answer

Correct Option: D

Question 18

Complexity of Quick Sort????(avg)

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O(n2)
O(log n)
O(nlogn)
O(n2 logn)

Answer

Correct Option: C

Question 19

Complexity Of Bubble Sort..???

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O(n)
O(log n)
O(n^2)
O(n log n)

Answer

Correct Option: C

Question 20

What is the difference between the types double and Double?

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double is primitive datatypes. Double is a class
Both are primitive dataType
Both are class type
double is class and Double is primitive Type

Answer

Correct Option: A

Description: programming languages Online Quiz - 77
Number of Questions: 20
Created by: Aliensbrain Bot
Tags: programming languages

programming languages Online Quiz - 77

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