BASIC DATA TYPES IN LISTS CODE
BASIC DATA TYPES IN LISTS PLUS

Its range of values is beyond the scope of this discussion, but is specified in theįloating-Point Types, Formats, and Values section of the Java Language Specification. Numbers and Strings covers BigDecimal and other useful classes provided by the Java platform.ĭouble: The double data type is a double-precision 64-bit IEEE 754 floating point. This data type should never be used for precise values, such as currency. As with the recommendations for byte and short, use a float (instead of double) if you need to save memory in large arrays of floating point numbers. Long class also contains methods like compareUnsigned, divideUnsigned etc to support arithmetic operations for unsigned long.įloat: The float data type is a single-precision 32-bit IEEE 754 floating point. Use this data type when you need a range of values wider than those provided by int. In Java SE 8 and later, you can use the long data type to represent an unsigned 64-bit long, which has a minimum value of 0 and a maximum value of 2 64-1. The signed long has a minimum value of -2 63 and a maximum value of 2 63-1. Long: The long data type is a 64-bit two's complement integer.

Integer class to support the arithmetic operations for unsigned integers. Static methods like compareUnsigned, divideUnsigned etc have been added to the See the section The Number Classes for more information. 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.

BASIC DATA TYPES IN LISTS CODE

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.

BASIC DATA TYPES IN LISTS PLUS

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'.

Basic data types in lists