Core Java[Boolean Constants,Datatypes]

Boolean Constants

• If  a  condition is evaluated it may either return true or false based on input given by user,here the boolean constants are true/false.
• We must declare boolean constants in lowercase because both are predefined literals.

Datatype

• datatype is keyword which tells about type of data we are using in a program.
• datatype also allocates memory for a variable.

syntax

• datatype varname;

 or

• datatype var1,var2,....;

example:

• char ch;