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Java Syntax and Data Types:
Understanding the Basics of Java Syntax and Data Types
Introduction
● Java is a high-level, object-oriented programming language
developed by Sun Microsystems (now owned by Oracle)
● It is widely used for building secure and robust applications
● Java is platform-independent and can run on various operating
systems
Data Types
● Java has eight primitive data types:
○ byte: 8-bit signed integer
○ short: 16-bit signed integer
○ int: 32-bit signed integer
○ long: 64-bit signed integer
○ float: 32-bit single-precision floating-point number
○ double: 64-bit double-precision floating-point number
○ boolean: represents true or false value
○ char: 16-bit Unicode character
● Non-primitive data types, also known as reference types,
include:
○ Classes
○ Interfaces
○ Arrays
Variables
● In Java, we use variables to store data
● A variable must have a data type and a name
● To declare a variable in Java, we use the following syntax:
dataType variableName;
Java Syntax and Data Types:
Understanding the Basics of Java Syntax and Data Types
Introduction
● Java is a high-level, object-oriented programming language
developed by Sun Microsystems (now owned by Oracle)
● It is widely used for building secure and robust applications
● Java is platform-independent and can run on various operating
systems
Data Types
● Java has eight primitive data types:
○ byte: 8-bit signed integer
○ short: 16-bit signed integer
○ int: 32-bit signed integer
○ long: 64-bit signed integer
○ float: 32-bit single-precision floating-point number
○ double: 64-bit double-precision floating-point number
○ boolean: represents true or false value
○ char: 16-bit Unicode character
● Non-primitive data types, also known as reference types,
include:
○ Classes
○ Interfaces
○ Arrays
Variables
● In Java, we use variables to store data
● A variable must have a data type and a name
● To declare a variable in Java, we use the following syntax:
dataType variableName;
