Questions and Answers
What is the purpose of the main() method in Java?
It is required and contains the code that will be executed
What is the naming convention for a Java class?
It should start with an uppercase letter
What is the role of System.out.println() in Java?
To print a line of text to the screen
What must the name of a Java file match?
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What does it mean that Java is case-sensitive?
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Study Notes
Java Basics
- The
main()
method is the entry point for any Java program, where execution of the program begins. - In Java, a class name follows the PascalCase convention, meaning the first letter of each word is capitalized, with no underscores or spaces.
-
System.out.println()
is a statement used to print output to the console, followed by a newline character. - In Java, the name of a Java file must match the name of the public class it contains, and the file extension must be
.java
. - Java is case-sensitive, meaning that the programming language treats uppercase and lowercase letters as distinct characters, making
Hello
different fromhello
.
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