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Java Basics

Start with a class and main method.

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The concept

Java code lives in classes. The main method is the entry point, and System.out.println prints a line.

Java

class Main {
  public static void main(String[] args) {
    System.out.println("Hello Programonic");
  }
}

Output

Hello Programonic

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1class Main {

2 public static void main(String[] args) {

3 System.out.println("Hello Programonic");

4 }

5}

Start to inspect the source, values, and output. These prepared steps explain the published sample; grouped loop steps describe multiple iterations.

View the complete dry-run table

Prepared trace of the published program. Some rows group repeated iterations.
Step / line	What happens	State after step	Output so far
	The JVM enters the main method.	`—`	—
	println writes the message and a newline.	`—`	Hello Programonic

How Java processes this code

The Java compiler produces bytecode. The JVM loads the class and invokes its main method.