Use the Integer class to use int data type as an unsigned integer. In Java SE 8 and later, you can use the int data type to represent an unsigned 32-bit integer, which has a minimum value of 0 and a maximum value of 2 32-1. Int: By default, the int data type is a 32-bit signed two's complement integer, which has a minimum value of -2 31 and a maximum value of 2 31-1. As with byte, the same guidelines apply: you can use a short to save memory in large arrays, in situations where the memory savings actually matters. It has a minimum value of -32,768 and a maximum value of 32,767 (inclusive). Short: The short data type is a 16-bit signed two's complement integer. They can also be used in place of int where their limits help to clarify your code the fact that a variable's range is limited can serve as a form of documentation. The byte data type can be useful for saving memory in largeĪrrays, where the memory savings actually matters. It has a minimum value of -128 and a maximum value of 127 (inclusive). The eight primitive data types supported by the Java programming language are:īyte: The byte data type is an 8-bit signed two's complement integer. Primitive values do not share state with other primitive values. A primitive type is predefined by the language and is named by a reserved keyword. In addition to int, the Java programming language supports seven other primitive data types. A variable's data type determines the values it may contain, plus the operations that may be performed on it. Doing so tells your program that a field named "gear" exists, holds numerical data, and has an initial value of "1".
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