Java Syntax & Output

Classes, main method, statements and println.

✍️ 2 exercises in this lesson

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Every Java program has at least one class, and execution starts in the main method:

public static void main(String[] args)

Statements end with a semicolon ;.
Code blocks use curly braces { }.
Java is case-sensitive: Main and main are different.
System.out.println() prints a line; System.out.print() prints without a new line.

Java Comments

// single line and /* multi-line */

Key Takeaways: Java Syntax & Output

Mastering Java Syntax & Output helps you write clean and reliable Java code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

Java Syntax & Output Code Example

Java

public class Main {
    public static void main(String[] args) {
        // Print some text
        System.out.println("Line one");
        System.out.print("Same ");
        System.out.print("line");
        System.out.println();
        System.out.println(3 + 4);
    }
}

Output