Java: Matches a string that has a p followed by zero or more q's

Last update on May 24 2025 12:59:41 (UTC/GMT +8 hours)

2. Match 'p' Followed by 'q's

Write a Java program that matches a string that has a p followed by zero or more q's.

Sample Solution:

Java Code:

import java.util.Scanner;
public class test {
 
   public static void main(String[] args) {
	   
	    System.out.println(validate("p"));
		System.out.println(validate("pq"));
		System.out.println(validate("pqq"));		
		System.out.println(validate("pqr"));
		System.out.println(validate("prr"));
        }

   public static String validate(String text) {
	   if (text.matches("pq*?"))
                return "Found a match!";
        else
                return "Not matched!";
   }
}

Sample Output:

Found a match!
Found a match!
Found a match!
Not matched!
Not matched!  

Pictorial Presentation:

Flowchart :

For more Practice: Solve these Related Problems:

• Write a Java program to check if a string starts with 'p' and is followed by zero or more 'q' characters using regex.
• Write a Java program to validate that a string exactly matches a pattern of a 'p' followed by any number of 'q's.
• Write a Java program to implement a method that returns true if the string conforms to a 'p' followed by an optional sequence of 'q's.
• Write a Java program to test edge cases where the string contains only 'p' or a mix of 'p's and 'q's and nothing else.

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