Java Lab Documentation

Printing

Category:Java Basics

Learning how to print in Java is critical for developing a variety of programs, but it is also helpful in debugging your program and identifying what is happening on the back-end at different phases. The general syntax for printing is System.out.println() or System.out.print().

System: a final class defined in java.lang

out: an instance of PrintStream, which is part of the System class

println & print: methods to print to the console

The Difference between println() and print()

println(): adds a line separator (new line) after the printed statement

print(): does not add a new line after the printed statement

Examples

Using println() and print()

public static void main(String [] args) {
   System.out.println("Welcome");
   System.out.print("Hello ");
   System.out.println("World");
}

Output:

Welcome

Hello World

Using Variables with System.out.println()

public static void main(String [] args) {
   int a = 4
   System.out.println("The value of a is " + a + ".");
}

Output:

The value of a is 4.

Syntax

System.out.println("insert text here");
System.out.print("insert text here");