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Java Scanner skip() Method with Example

Scanner Class skip() method: Here, we are going to learn about the skip() method of Scanner Class with its syntax and example.
Submitted by Preeti Jain, on March 24, 2020

Scanner Class skip() method

Syntax:

    public Scanner skip(Pattern patt);
    public Scanner skip(String patt);
  • skip() method is available in java.util package.
  • skip(Pattern patt) method is used to skip input that meets the given pattern, avoiding delimiters.
  • skip(String patt) method is used to skip input that meets the pattern formed from the given string (patt).
  • These methods may throw an exception at the time of skipping input that meets the given pattern.
    • NoSuchElementException: This exception may throw when the given pattern does not exist.
    • IllegalStateException: This exception may throw when this Scanner is not opened.
  • These are non-static methods and it is accessible with the class object only and if we try to access these methods with the class name then we will get an error.

Parameter(s):

  • In the first case, skip(Pattern patt),
    • Pattern patt – represents the pattern to skip.
  • In the second case, skip(String patt),
    • String patt – represents a string denoting the pattern to skip.

Return value:

In both the cases, the return type of the method is Scanner, it retrieves this Scanner object.

Example 1:

// Java program to demonstrate the example 
// of skip() method of Scanner

import java.util.*;
import java.util.regex.*;

public class Skip {
 public static void main(String[] args) {
  String str = "Java Programming! 3 * 8= 24";

  // Instantiates Scanner
  Scanner sc = new Scanner(str);

  // By using skip(Pattern) method
  // is to skip that meets the given
  // pattern
  sc.skip(Pattern.compile(".ava"));
  System.out.println("sc.skip(): " + sc.nextLine());

  // Scanner closed
  sc.close();
 }
}

Output

sc.skip():  Programming! 3 * 8= 24

Example 2:

import java.util.*;
import java.util.regex.*;

public class Skip {
 public static void main(String[] args) {
  String str = "Java Programming! 3 * 8= 24";

  // Instantiates Scanner
  Scanner sc = new Scanner(str);

  // By using skip(String) method
  // is to skip that meets the given
  // pattern constructed from the given
  // String

  sc.skip("Java");
  System.out.println("sc.skip(Java): " + sc.nextLine());

  // Scanner closed
  sc.close();
 }
}

Output

sc.skip(Java):  Programming! 3 * 8= 24





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