Hello Java Program

Java is a popular programming language used to build robust and secure applications. In this tutorial, we will write a simple "Hello World" program in Java to get started.

Syntax

The syntax for the "Hello World" program in Java is as follows:

public class HelloWorld {
   public static void main(String[] args) {
      System.out.println("Hello, World!");
   }
}

Let's walk through this code step by step.

• The public keyword represents the access level. Here, we are making the class HelloWorld accessible to all classes in the Java universe.
• class HelloWorld defines a new class called HelloWorld.
• public static void main(String[] args) is the method signature for the main method in Java. This method is the entry point for any Java code.
• The System.out.println() method is used to print the string "Hello, World!" to the console.

Example

Let's try to run the "Hello World" program in Java. Here is the example code:

public class HelloWorld {
   public static void main(String[] args) {
      System.out.println("Hello, World!");
   }
}

Output

After compiling and running the Java code above, you should see the following output in the console:

Hello, World!

Explanation

The "Hello World" program in Java is a simple program that prints the string "Hello, World!" to the console. The program defines a class called HelloWorld with a single method called main. This method is executed when the program is run, and it simply prints the string "Hello, World!" to the console using the System.out.println() method.

Use

The "Hello World" program is often used as a very simple first example when learning a new programming language or environment. It is a very simple program, but it demonstrates how to write, compile, and run a basic program in Java.

Important Points

• The main method in Java is the entry point for any Java program.
• Use the System.out.println() method to print text to the console in Java.
• Java is a very popular and widely used programming language.

Summary

In this tutorial, we wrote a simple "Hello World" program in Java. We covered the syntax, example, output, explanation, use, important points, and summary of the program. Now that you have learned how to write a basic Java program, you can build more complex applications using this powerful and versatile programming language.