Java

Developing a Java program involves

writing code, compiling it into bytecode running the bytecode.

Your First Java Program.

public class MainClass { public static void main(String[] args) { System.out.println("Java"); } } The Primitive Types Java has eight primitive types of data: byte, short, int, long, char, float, double, and boolean. These can be put in four groups: Integers includes byte, short, int, and long Floating-point numbers includes float and double Characters includes char, like letters and numbers. Boolean includes boolean representing true/false values. byte The smallest integer type a range from -128 to 127. useful when working with a stream of data from a network or file. Byte variables are declared by use of the byte keyword. byte b, c; int The most commonly used integer type a signed 32-bit type Ranging from -2,147,483,648 to 2,147,483,647 used to control loops and to index arrays. the most efficient type long a signed 64-bit type