My First Java Program

public class Hello {
    /**
     * My first Java program
     */
    public static void main(String[] args) {
        //prints the string "Hello world!" on screen
        System.out.println("Hello world!");
    }
}

Error Types

• Syntax errors
• Run-time errors

Java Comments

• C++ Style Comments
• C-Style Comments
• Special Javadoc Comments