Java Primitive Data Types Quiz

Primitive Data Types

• Primitive data types are the basic building blocks of data in Java.
• They are not objects.

Numeric Data Types

• Integer: Represents whole numbers.
  • byte: Stores values from -128 to 127 (8 bits).
  • short: Stores values from -32,768 to 32,767 (16 bits).
  • int: Stores values from -2,147,483,648 to 2,147,483,647 (32 bits).
  • long: Stores values from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 (64 bits).
• Floating-point: Represents decimal numbers.
  • float: Stores single-precision floating-point numbers (32 bits).
  • double: Stores double-precision floating-point numbers (64 bits).

Non-Numeric Data Types

• char: Stores single characters (16 bits).
• boolean: Represents true or false values.

Data Type Sizes

• byte: 8 bits
• short: 16 bits
• int: 32 bits
• long: 64 bits
• float: 32 bits
• double: 64 bits
• char: 16 bits

Decimal Number Considerations

• In Java, decimal numbers are treated as double by default.
• To represent a decimal number as a float, append the letters f or F to the number.

Initialization

• Variables can be initialized using other variables or expressions.
• Example:
  • int a = 5;
  • int b = a;
  • int c = 4 * a;