Java

Defination

Java's contents include core language concepts like data types, control statements, and Object-Oriented Programming (OOP), as well as advanced topics such as exception handling, collections framework, multithreading, file I/O, database connectivity (JDBC), and web frameworks. It also involves working with development tools like the Java Development Kit (JDK) and Integrated Development Environments (IDEs).

Primitive Data Types:

These are the fundamental building blocks and represent single, raw values. They are predefined in Java and are not considered objects. Integer Types: Used for whole numbers. byte: 1 byte, range -128 to 127. short: 2 bytes, range -32,768 to 32,767. int: 4 bytes, range -2,147,483,648 to 2,147,483,647 (most commonly used). long: 8 bytes, range -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807. Floating-Point Types: Used for numbers with decimal points. float: 4 bytes, single-precision floating-point. double: 8 bytes, double-precision floating-point (most commonly used). Character Type: char: 2 bytes, stores a single Unicode character (e.g., 'A', '€'). Boolean Type: boolean: Stores true or false values.