How to take Java User Input

Now. we learn how can we take input from user in Java. So, we can take input from user in java using Scanner class which is present in java.util package . See below code how to take Java user input.

To use the Scanner class that is present in java.util package, create an object of the class Scanner and use any available methods or functions that are found in the Scanner class . In below example, we will use the nextLine() method, which is used to read Strings(textual message):

import java.util.Scanner; // import the Scanner class form java.util package

class Main {
  public static void main(String[] args) {
    Scanner Obj = new Scanner(System.in);
    String userName;
    
    // Enter username and press Enter
    System.out.println("Enter username"); 
    userName = Obj.nextLine();   
       
    System.out.println("Username is: " + userName);        
  }
}

Output

Enter username
usman
Username is: usman

Methods to take Java User Input

This is how you could read a string input from user others types of input like numeric, character etc here below are methods which can be used for taking input from user:

In the below example , we have use different methods to read data or take inputs of various types:

import java.util.Scanner; // import the Scanner class form java.util package

class Main {
  public static void main(String[] args) {
    Scanner Obj = new Scanner(System.in);

    System.out.println("Enter name, age and salary:");

    // String input
    String name = Obj.nextLine();

    // Numerical input
    int age = Obj.nextInt();
    double salary = Obj.nextDouble();

    // Output input by user
    System.out.println("Name: " + name); 
    System.out.println("Age: " + age); 
    System.out.println("Salary: " + salary); 
  }
}

Output

Enter name, age and salary:
usman
10
10000
Name: usman
Age: 10
Salary: 10000

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