Question#1
A variable declared within a class but outside any method, constructor, or block is called an _____.
a) static variable
b) instance variable ✅- Answer
c) class variable
d) local variable

Question#2
The process of converting a higher data type to a lower data type is called _____.
a) auto boxing
b) type coercion
c) explicit casting ✅- Answer
d) implicit casting

Question#3
A class variable in Java is declared using the _____ keyword.
a) final
b) private
c) transient
d) static ✅- Answer

Question#4
The automatic conversion of a primitive data type to its wrapper class is known as _____.
a) type coercion
b) narrowing
c) autoboxing ✅- Answer
d) unboxing

Question#5
The 'if-else-if ladder' creates a _____ structure where the program enters the block whose condition is true.
a) recursion
b) loop
c) decision tree ✅- Answer
d) sequence

Question#6
In Java, the process of changing the value of one data type into another is known as _____.
a) type conversion ✅- Answer
b) type declaration
c) type propagation
d) type inference

Question#7
Each instance of a class has its own copy of _____.
a) instance variables ✅- Answer
b) static variables
c) local variables
d) class variables

Question#8
The 'default' statement in a switch block is executed if _____ match.
a) no cases ✅- Answer
b) last case
c) all cases
d) first case

Question#9
In Java, primitive types can be represented as objects using _____.
a) generic classes
b) superclasses
c) wrapper classes ✅- Answer
d) abstract classes

Question#10
Variables declared within a method, constructor, or code block are called _____.
a) static variables
b) persistent variables
c) global variables
d) local variables ✅- Answer

Question#11
The reverse process of autoboxing is called _____.
a) unboxing ✅- Answer
b) promotion
c) boxing
d) narrowing

Question#12
Assigning a smaller data type value to a larger data type is called _____ casting.
a) implicit ✅- Answer
b) explicit
c) coercive
d) manual

Question#13
A switch case variable cannot be a _____.
a) float ✅- Answer
b) String
c) int
d) char

Question#14
If we do not explicitly assign a value, instance variables are initialized with _____.
a) zero
b) undefined
c) default values ✅- Answer
d) null

Question#15
The process of converting 'String' to 'int' is accomplished using _____.
a) String.valueOf()
b) parseString()
c) Double.parseDouble()
d) Integer.parseInt() ✅- Answer

Question#16
To access a class variable, you use the _____ name.
a) block
b) object
c) method
d) class ✅- Answer

Question#17
A variable's lifespan is limited to the block where it is declared if it is a _____.
a) local variable ✅- Answer
b) static variable
c) global variable
d) instance variable

Question#18
Java's control flow statements include decision making, loop, and _____ statements.
a) jump ✅- Answer
b) recursion
c) allocation
d) declaration

Question#19
The syntax 'if(condition) { statement; }' represents a _____ statement.
a) if-else
b) switch
c) nested if
d) simple if ✅- Answer

Question#20
The boolean expression of an if statement evaluates to either _____ or false.
a) null
b) true ✅- Answer
c) void
d) zero