Question

How to use a scanner class in Java??


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Answer 1

Explanation:

Scanner Class in Java

To create an object of Scanner class, we usually pass the predefined object System.in, which represents the standard input stream. ...

To read numerical values of a certain data type XYZ, the function to use is nextXYZ(). ...

To read strings, we use nextLine().

To read a single character, we use next()

Answer 2

Java User Input (Scanner)

Java User Input

The Scanner class is used to get user input, and it is found in the java.util package.

To use the Scanner class, create an object of the class and use any of the available methods found in the Scanner class documentation. In our example, we will use the nextLine() method, which is used to read Strings:

Example

class MyClass {

public static void main(String[] args) {

Scanner myObj = new Scanner(System.in); // Create a Scanner object

System.out.println("Enter username");

String userName = myObj.nextLine(); // Read user input

System.out.println("Username is: " + userName); // Output user input

}

}