Front

Hello World:

Back

Traditionally, the very first program you write when learning a programming language is a program that prints “Hello world” to the user.

Front

System.out.println

Back

Java method that lets us print out a line of output to the user

Front

System.out.print

Back

Java method lets us print output to the user without ending the line printed.

Front

Double Quotes

Back

The " character

Front

Variable

Back

A symbol or container that holds a value.

Front

int

Back

int is a Java type that represents an integer (a whole number)

Front

String

Back

String is a Java type that represents a string of characters (text)

Front

char 

Back

char is a Java type that represents a single character (a single letter)

Front

Boolean

Back

boolean is a Java type that can either be true or false

Front

double

Back

double is a Java type that represents a real number with decimal values