Java programming

Start programming with a simple code

Now, let's break down each part of the program:

public class HelloWorld: This defines a Java class named HelloWorld. The public keyword means that the class is accessible from other classes. The name of the class must match the name of the file it's in (in this case, HelloWorld.java).

{ and }: These curly braces define the beginning and end of the class's body. The code inside these braces is what the class contains.

public static void main(String[] args): This is the main method of the program. It's the entry point for execution, just like the main function in C. The public keyword makes the method accessible from outside the class. The static keyword means that the method belongs to the class itself, not an instance of the class. The void keyword indicates that the method doesn't return any value. The method takes an array of strings args as its parameter.

{ and }: These curly braces define the beginning and end of the main method's body.

System.out.println("Hello, World!");: This line uses the System.out object to call the println method, which prints the text "Hello, World!" followed by a newline to the standard output (usually the console).

Now, let's walk through the program's execution:

The program starts executing from the main method.

The System.out.println statement is called, which prints "Hello, World!" to the console.

The println method adds a newline after printing.

When you compile and run the program, you'll see the output.

Similar to the "Hello, World!" program in C, this Java program serves as a starting point for learning the language. It demonstrates key concepts such as classes, methods, and the use of the standard output for displaying information.

🔗 See The Video