Java Data Types

Primitive Data Types

• boolean (true, false)
  
• char (8 bits)
  
• byte (8 bits)
• short (16 bits)
• int (32 bits)
• long (64 bits)
• float (32 bits)
• double (64 bits)

Reference Variables vs. Primitive Variables

• Primitive variables are variables with primitive data types. They store data in the actual memory location of the variable is.
• Reference variables are variables that stores the address in the memory location. It points to another memory location of the actual data is.