Java Basics, Printing

25sp ver.

Note: this is for the Spring 2025 iteration of CSE 121. Looking for a different quarter? Please visit https://courses.cs.washington.edu/courses/cse121/.

Structure of a Java program

public class Name {
    public static void main(String[] args) {
        statement;
        // more statements here...
        statement;
    }
}

Printing

(displays output in the console window)

Code Description
System.out.print("text"); prints text
System.out.println("text"); prints text and moves to a new line
System.out.println(); prints a blank line

Comments

(notes written in the program for the programmer to read)

/* text
 * (multiple lines)
 */

// text (one line)

Example

/* CSE 121, Stan Smith
 * This program prints the steps of my favorite recipe.
 */

// This code displays the preamble of the US Constitution.