Java basic data types
0 likes374 views
This document discusses the 8 primitive data types in Java - byte, short, int, long, float, double, boolean, and char. It provides details on the bit size and possible values for each primitive type, and notes that primitive types do not have methods while reference types are used to access objects. It also briefly introduces literals as fixed values in source code and escape sequences for strings and characters.
1 of 8
Download to read offline
More Related Content
What's hot (20)
Ad
Viewers also liked (20)
Ad
Similar to Java basic data types (20)
Java basic data types
- 1. Primitive Data Types There are eight primitive data types supported by Java. Primitive data types are predefined by the language and named by a key word. Primitive types are not objects; so does not have any methods for further processing.
- 2. Non Decimal ● byte - signed 8-bit ● short - signed 16-bit ● int - signed 32-bit ● long - signed 64-bit
- 3. Decimal ● float - single-precision 32-bit ● double - double-precision 64-bit
- 4. boolean ● boolean data type represents one bit of information ● There are only two possible values : true and false. ● Default value is false
- 5. char ● 16-bit Unicode character ● Minimum value is ‘u0000′ (or 0). ● Maximum value is ‘uffff’ (or 65,535 inclusive)
- 6. Reference Data Types Reference variables are created using defined constructors of the classes. They are used to access objects. These variables are declared to be of a specific type that cannot be changed.
- 7. Java Literals A literal is a source code representation of a fixed value.
- 8. Java language supports few special escape sequences for String and char literals as well.