2. Which statement is true about Java?

Java is a platform-independent programming language

overloading can be explained with which of the OOPs concepts

static or compile time polymorphism

if I give protected access specifier for a method in class A which can be accessed from

within package and inherited classes from other packages

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OOPs Unit 1 Quiz

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Questions 20

Answers

1
pre-increment and post-increment operations are considered as
unary operations
bitwise operations
binary operations
turnery operations
2
Number of primitive data types in Java are?
9
4
8
6
3
2. Which statement is true about Java?
Java is a platform-dependent programming language
Java is a platform-independent programming language
Java is a code dependent programming language
Java is a sequence-dependent programming language
4
Which of the following is not an OOPS concept in Java?
Polymorphism
Compilation
Inheritance
Encapsulation
5
overloading can be explained with which of the OOPs concepts
static or compile time polymorphism
inheritance
runtime-polymorphism
dynamic polymorphism
6
which of the following possibilities are allowed for method overloading?
all of the above
methods can differ in type order of parameters
methods can differ in type of parameters
methods can differ in number of parameters
7
1. Who invented Java Programming?
Dennis Ritchie
James Gosling
Bjarne Stroustrup
Guido van Rossum
8
type conversion will happen at
before compilation by the developer
compile time
run-time
all of the above
9
which access specifier is best suited for a method which should be accessed only with in a class
default
protected
public
private
10
Identify the correct restriction on static methods.
they can access only static data
they can call only other static methods
all of the above
they can be called with class name only
11
Select the valid statement.
char[] ch = new char[5]
char[] ch = new char(5)
char[] ch = new char()
char[] ch = new char[]
12
what will be the output of this?
5 to 10 numbers only
1 to 3 numbers only
nothing will be printed
1 to 10 numbers except 4
13
BufferredReader class is in which package
java.io.*;
java.util.*;
java.awt.*;
java.stdio.*;
14
if I give protected access specifier for a method in class A which can be accessed from
only within the class
all classes that inherit from class A within the same package
any where any class
within package and inherited classes from other packages
15
Arrays in java are ------------data types
non-primitive data type
user defined data type
none of the above
primitive data type
16
which of the following packages will contain scanner class
java.util.*;
java.awt.*;
java.io.*;
java.util.io.*;
17
3. What is the extension of java code files?
.jx
.java
.class
.js
18
Automatic type conversion is possible in which of the possible cases?
long to int
short to int
int to long
Byte to int
19
What is the size of float and double in java?
64 and 32
64 and 64
32 and 32
32 and 64
20
Overloading is a Run-time activity
False
True

OOPs Unit 1 Quiz Flashcards | StudBud