Scanner Class

Author: Ravi Poswal

Java offers several ways to interpret keyboard input. The most well-known method of reading data is the scanner. This class belongs to java.util package. We can get different input types, such as int, float, double, byte, short, etc.

 Syntax:

     Scanner b=new Scanner (System.in);

Some common methods are

1. nextInt():-obtaining an integer number from the user

Syntax:- public int nextInt();

2. nextLine():- read a String value from the user

Syntax:- public String nextLine();

3. nextBoolean():- reads a Boolean value from the user

Syntax:- public boolean nextBoolean();

4. nextFloat():- reads float value from the user

Syntax:- public float nextFloat();

5. nextShort():- reads a short value from the user

Syntax:- public short nextShort();

6. reset():- reset the scanner which is used

Syntax:- public Scanner reset();

7. close() :- close the scanner

Syntax:- public void close();

8. next():-the following token from the scanner

Syntax:-public String next();

Code Example

import java.util.*;  
class EMP {    
 public static void main(String args[])
{                       
System.out.println("Enter Your Details :- ");  
          Scanner in = new Scanner(System.in);  
System.out.print("Enter your name: ");    
          String name = in.nextLine();   
System.out.println("your Name is: " + name);           
System.out.print("Enter your age: ");  
          int i = in.nextInt();  
 System.out.println("your Age: " + i);  
 System.out.print("Enter your salary: ");  
          double d = in.nextDouble();  
  System.out.println("your Salary: " + d);         
          in.close();           
          }    
}
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