Basics

Question 1

You can declare multiple variables by

Answer 1

int x=1 , y=2, z =3;

Question 2

You can assign the same value to multiple variables like

Answer 2

int x, y, z;

x, y, z = 50;

Question 3

What are identifiers

Answer 3

These are variable names

Question 4

The byte data type stores

Answer 4

Whole numbers from -128 to 127

Question 5

The short data type stores

Answer 5

Whole numbers from -32,768 to 32,767

Question 6

The double data type stores

Answer 6

Fractional numbers. It’s sufficient for storing 15 decimal digits

Question 7

Wrapper classes include

Answer 7

Byte byte, Short short, Integer int, Long long, Float float, Double double, Boolean boolean, Character char

Question 8

To get the value of a wrapper object, you can simply append the primitive type declaration with

Answer 8

Value() eg intValue()