JAVA MCQs - CSE MCQs Questions and Answers

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Which of these is a process of converting a simple data type into a class?

type wrapping

type conversion

type casting

None of the Mentioned

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Which of these is a super class of wrappers Double & Integer?

Long

Digits

Float

Number

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Which of these is wrapper for simple data type float?

float

double

Float

Double

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Which of the following is method of wrapper Float for converting the value of an object into byte?

bytevalue()

byte bytevalue()

Bytevalue()

Byte Bytevalue()

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Which of these methods is used to check for infinitely large and small values?

isInfinite()

isNaN()

Isinfinite()

IsNaN()

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Which of the following package stores all the simple data types in java?

lang

java

util

java.packages

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Which of these is a wrapper for data type int?

Integer

Long

Byte

Both a & b

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Which of the following methods is a method of wrapper Integer for obtaining hash code for the invoking object?

int hash()

int hashcode()

int hashCode()

Integer hashcode()

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Which of these is a super class of wrappers Long, Character & Integer?

Long

Digits

Float

Number