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Java basics

nextInt()


This method Scans the next token of the input as an int.An invocation of this method of the form nextInt() behaves in exactly the same way as the invocation nextInt(radix), where radix is the default radix of this scanner.

Syntax:
Library: java.util.Scanner

public int nextInt()


Example:

import java.util.*;

public class ScannerDemo {

   public static void main(String[] args) {

      String s = "Hello World! 3 + 3.0 = 6.0 true ";

      // create a new scanner with the specified String Object
      Scanner scanner = new Scanner(s);

      // find the next int token and print it
      // loop for the whole scanner
      while (scanner.hasNext()) {

         // if the next is a int, print found and the int
         if (scanner.hasNextInt()) {
            System.out.println("Found :" + scanner.nextInt());
         }
         // if no int is found, print "Not Found:" and the token
         System.out.println("Not Found :" + scanner.next());
      }

      // close the scanner
      scanner.close();
   }
}

Output:

Not Found :Hello
Not Found :World!
Found :3
Not Found :+
Not Found :3.0
Not Found :=
Not Found :6.0
Not Found :true


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