Java: Match a word containing 'g', not at the start or end of the word

Last update on March 13 2025 09:02:53 (UTC/GMT +8 hours)

Write a Java program that matches a word containing 'g', not at the start or end of the word.

Sample Solution:

Java Code:

import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class test {
 
   public static void main(String[] args) {
	   
	    System.out.println(validate("The quick brown fox jumps over the lazy dog."));
		System.out.println(validate("Java Exercises."));
		System.out.println(validate("Programming Language"));
		System.out.println(validate("Do humans eat gizzards?"));
		System.out.println(validate("PostgreSQL"));
        }

   public static String validate(String text) {
	    Pattern pattern = Pattern.compile("\\Bg\\B");
		 Matcher m = pattern.matcher(text);
		
	   if (m.find())
                return "Found a match!";
       else
                return "Not matched!";
   }
}

Sample Output:

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

Pictorial Presentation:

Flowchart :

For more Practice: Solve these Related Problems:

• Write a Java program to extract words where the letter 'g' appears only in the middle, not at the boundaries, using lookahead/lookbehind.
• Write a Java program to validate that a given word has 'g' in an interior position and not as the first or last character.
• Write a Java program to filter a list of words to only include those with 'g' placed between other letters.
• Write a Java program to design a regex that matches words with a middle 'g' and test it against various inputs.

Java Code Editor:

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