Java Scanner useDelimiter() Method with Example

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

Scanner Class useDelimiter() method

Syntax:

    public Scanner skip(Pattern patt);
    public Scanner skip(String patt);

useDelimiter() method is available in java.util package.
useDelimiter(Pattern patt) method is used to put the delimiter pattern to the given pattern (patt) of this Scanner.
useDelimiter(String patt) method is used to put the delimiter pattern to the pattern formed from the given string (patt) of this Scanner.
These methods don’t throw an exception at the time of the set delimiter pattern.
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, useDelimiter(Pattern patt),
- Pattern patt – represents the delimiter pattern.
In the second case, useDelimiter(String patt),
- String patt – represents a string denoting the delimiter pattern.

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 useDelimiter() method of Scanner

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

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

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

  // By using useDelimiter(Pattern) method
  // is to use delimiter set by the given
  // pattern
  sc.useDelimiter(Pattern.compile("IH--"));
  System.out.println("sc.useDelimiter(Pattern): " + sc.delimiter());

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

Output

sc.useDelimiter(Pattern): IH--

Example 2:

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

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

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

  // By using useDelimiter(String) method
  // is to use delimiter set by the given
  // string
  sc.useDelimiter("IH--");
  System.out.println("sc.useDelimiter(String): " + sc.delimiter());

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

Output

sc.useDelimiter(String): IH--

Comments and Discussions!

Load comments ↻

Top MCQs

Top Programs/Examples