Question

how many types of integer constant are allowed in java ? how are they are written​

Answer 1

Explanation:

In Java, a constant value is created by using a literal representation of it. For example, below are some literals :

100 - specifies an integer literal

98.6 - specifies a floating-point literal

'X' - specifies a character constant

"This is a test" - this literal specifies a string literal

A literal can be used anywhere a value of its type is allowed.

Types of Literals

In Java, there are the following types of literals:

Integer Literals

Floating-point Literals

Boolean Literals

Character Literals

String Literals

Answer 2

Three types

Java Hexadecimal Integer Literals

Therefore the number 12 will be written either as 12 (as decimal) or 14 (as octal) or 0XC (as hexadecimal). To convert a number from any number system to Hexadecimal Number System, check the following : Java Decimal to Hexadecimal Conversion.