Data Types in Java

 In Java, there are several data types, which can be categorized into two main categories: primitive data types and reference data types.

1. Primitive Data Types: These are basic data types predefined by the language and are not objects. They store simple values.

a. Numeric Types:

• Integer Types: byte, short, int, long
• Floating-point Types: float, double

b. Character Type: char

c. Boolean Type: boolean

2. Reference Data Types: These are objects that are created using predefined classes or user-defined classes. They hold references to the memory location where the data is stored.

Now, let's represent this information with a diagram:

                                      

In this diagram, you can see the two main categories of data types in Java: primitive data types and reference data types. Each category contains specific data types with their respective subtypes.