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Java Data Types MCQ SET-1
Q.1 Which of the following not primitive data type
ANSWER= (A) Array
Q.2 How many primitive data types in JAVA
ANSWER= (B) 8
Q.3 The size of byte in java
ANSWER= (A) 8 bit
Q.4 The default value of byte data type in java ?
ANSWER= (A) 0
Q.5 The default value of Float data type in java ?
ANSWER= (B) 0.0f
Q.6 The size of Double data type in java ?
ANSWER= (C) 8 byte
Q.7 What is output of this code
Class test {
public static void main(string args[]) {
int a=5;
double d=a;
System.out.println(d);
}
}
ANSWER= (B) 5.0
Q.8 The size of int data type in java
ANSWER= (A) 4 byte
Q.9 What is the return type of constructor ?
ANSWER= (C) No return type
Q.10 What is the rabge of byte data type
ANSWER= (A) -128 to 127
Q.11 What is the size of long data type ?
ANSWER= (A) 8 byte
Q.12 The default value of long data type in java
ANSWER= (A) 0
Q.13 Default value of variable having boolean data type is
ANSWER= (B) FALSE
Q.14 Correct order of implicit conversion
ANSWER= (A) double , long, int, short, byte
Q.15 Correct order of explicit conversion
ANSWER= (C) byte , short , int, long, double
Q.16 which among the following is not a Data Type in Java ?
ANSWER= (C) long double
Q.17 What is the size of a CHAR data type constant in Java?
ANSWER= (B) 2 bytes
Q.18 What is the Range of a CHAR data type constant in Java?
ANSWER= (A) 0 to 65535
Q.19 Variable is a
ANSWER= (A) Data container
Q.20 If the value of a variable is varied from object to object isknown as ?
ANSWER= (C) Instance variable