useDelimiter(Pattern pattern)
The useDelimiter(Pattern pattern) method of java.util.Scanner class sets this scanner’s delimiting pattern to the specified pattern.
Syntax:
public Scanner useDelimiter(Pattern pattern)
Parameter: The function accepts a mandatory parameter pattern which specifies a delimiting pattern.
Return Value: The function returns this scanner.
Below programs illustrate the above function:
Program 1:
// Java program to illustrate the useDelimiter(Pattern Pattern) // method of Scanner class in Java import java.util.*;
import java.util.regex.Pattern;
public class GFG1 {
public static void main(String[] argv)
throws Exception
{
String s = "Geeksforgeeks has Scanner Class Methods" ;
// create a new scanner
// with the specified String Object
Scanner scanner = new Scanner(s);
// print a line of the scanner
System.out.println( "Scanner String: \n"
+ scanner.nextLine());
// display the old delimiter
System.out.println( "Old delimiter: "
+ scanner.delimiter());
// change the delimiter of this scanner
scanner.useDelimiter(Pattern.compile( ".ll." ));
// display the new delimiter
System.out.println( "New delimiter: "
+ scanner.delimiter());
// close the scanner
scanner.close();
}
} |
Scanner String: Geeksforgeeks has Scanner Class Methods Old delimiter: \p{javaWhitespace}+ New delimiter: .ll.
useDelimiter(String pattern)
The useDelimiter(String pattern) method of java.util.Scanner class Sets this scanner’s delimiting pattern to a pattern constructed from the specified String.
Syntax:
public Scanner useDelimiter(String pattern)
Parameter: The function accepts a mandatory parameter string pattern which specifies a delimiting pattern.
Return Value: The function returns this scanner.
Below programs illustrate the above function:
Program 1:
// Java program to illustrate the useDelimter(String Pattern) // method of Scanner class in Java import java.util.*;
public class GFG1 {
public static void main(String[] argv)
throws Exception
{
String s = "Geeksforgeeks has Scanner Class Methods" ;
// create a new scanner
// with the specified String Object
Scanner scanner = new Scanner(s);
// print a line of the scanner
System.out.println( "Scanner String: \n"
+ scanner.nextLine());
// print the old delimiter
System.out.println( "Old Delimiter: "
+ scanner.delimiter());
// change the delimiter
scanner.useDelimiter( "Wor" );
// print the new delimiter
System.out.println( "New Delimiter: "
+ scanner.delimiter());
// close the scanner
scanner.close();
}
} |
Scanner String: Geeksforgeeks has Scanner Class Methods Old Delimiter: \p{javaWhitespace}+ New Delimiter: Wor
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Scanner.html#useDelimiter(java.lang.String)