public class HelloWorld {
// The main method is the entry point of a Java program.
public static void main(String[] args) {
// Print "Hello, World!" to the console.
System.out.println("Hello, World!");
}
}
Explanation:
public class HelloWorld: This line declares a class named HelloWorld. In Java, every program must have at least one class, and the name of the file must match the name of the class (with the .java extension).
public static void main(String[] args): This is the main method, which serves as the entry point of the Java program. When you execute a Java program, the Java Virtual Machine (JVM) starts executing code from the main method. It accepts a single argument, an array of strings (args), which allows you to pass command-line arguments to the program. public means the method is accessible from outside the class. static means the method belongs to the class itself, rather than to instances of the class. void indicates that the method doesn't return any value.
System.out.println("Hello, World!");: This line prints the string "Hello, World!" to the console. System.out is an object that represents the standard output stream, typically the console. println is a method of the PrintStream class, which is part of System.out, used to print a line of text. "Hello, World!" is the string to be printed.
When you compile and run this Java program, it will output:
Output:
Hello, World!
