Question

Write a JAVA code using regex methods and concepts The test string S should match the following requirements:

• S must be of length 6
• First character should not be a digit (1, 2, 3, 4, 5, 6, 7, 8, 9 or 0).
• Second character should not be a lowercase vowel (a, e, i, o or u).
• Third character should not be b, c, D or E.
• Fourth character should not be a whitespace character (\r, \n, \t, \f or the space character).
• Fifth character should not be an uppercase vowel (A, E, I, O or U).
• Sixth character should not be a . or , symbol.

Answer 1

Please upvote if you like the answer, as it helps the community a lot.

Also if you have any doubts, feel free to ask in comments, we will reach you ASAP.

Solution:

CODE: MatchMyPattern.Java

import java.util.regex.Pattern;
import java.util.Scanner;
  
class MatchMyPattern
{
public static void main(String args[])
{
  
   Scanner sc = new Scanner(System.in);
   System.out.print ("Enter Text to be Matched with the pattern: ");
   String S = sc.next();
   System.out.print ("Text Match Result is: ");
System.out.println (Pattern.matches("[^0-9][^aeiou][^bcDE][^\n\r\t\f ][^AEIOU][^.,]",S));
}
}

SAMPLE I/Os:

Enter Text to be Matched with the pattern: SILENT
Text Match Result is: true

Enter Text to be Matched with the pattern: 0ILENT
Text Match Result is: false

Enter Text to be Matched with the pattern: SiLENT
Text Match Result is: false

Enter Text to be Matched with the pattern: SIDENT
Text Match Result is: false

Enter Text to be Matched with the pattern: SIL NT
Text Match Result is: false

Enter Text to be Matched with the pattern: SILEAT
Text Match Result is: false

Enter Text to be Matched with the pattern: SILEN.
Text Match Result is: false

Enter Text to be Matched with the pattern: SILENTS
Text Match Result is: false