Java Programs

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Introduction to Java

Java Program - Print user’s name

import java.util.Scanner;
 
public class PrintUserName {
    public static void main(String[] args) {
        // Create Scanner object to read input from keyboard
        Scanner sc = new Scanner(System.in);
 
        // Asking user to enter name
        System.out.print("Enter your name: ");
 
        // Reading the name typed by user
        String name = sc.nextLine();
 
        // Printing the name
        System.out.println("Hello, " + name + "!");
 
        sc.close(); // Closing scanner
    }
}
 

 
OUTPUT :
Enter your name: Anand Rao
Hello, Anand Rao!

Explanation (Step-by-Step)

1. import java.util.Scanner;
• Scanner is a built-in Java class used to take input from the user.
2. Scanner sc = new Scanner(System.in);
• Creates a Scanner object that reads input from the keyboard.
3. System.out.print("Enter your name: ");
• Displays a message asking for the user's name.
4. String name = sc.nextLine();
• Reads the full line of text entered by the user and stores it in the variable name.
5. System.out.println("Hello, " + name + "!");
• Prints a greeting along with the entered name.
6. sc.close();
• Closes the Scanner to prevent memory leaks.