Data Types in Java

• Java is rich in its data type.

• Data type tells the type of data, that you are going to store in memory.

• It gives the information that which operations that may be performed on it.

Primitive Data Types

• The Java programming language supports eight primitive data types.
• A primitive type is predefined by the language and is named by a reserved keyword.
• Primitive values do not share state with other primitive values.

The eight primitive data types supported by the Java programming language are:

Tips :

1. There are only two values for boolean data type either true or false, and cannot replace it with 1 0r 0.

2. Default values are for fields, not for local variables.

3. The compiler never assigns a default value to an uninitialized local variable. make sure to assign it a value before you attempt to use it.

4. Accessing an uninitialized local variable will result in a compile-time error.

5. Default value for reference variable is null.