Java: Remove all the vowels of a given string and return the new string

Last update on May 24 2025 12:58:59 (UTC/GMT +8 hours)

15. Remove Vowels from String

Write a Java program to remove all vowels from a given string. Return the updated string.

Here we consider a, e, i, o, u are vowels (not y).

Sample Solution-1:

Java Code:

public class test {
 
   public static void main(String[] args) {	   
	    String text = "LOWERED";
		System.out.println("Original string: "+text);
		System.out.println("After removing vowels: New string: "+validate(text));
		text = "Java";
		System.out.println("\nOriginal string: "+text);
		System.out.println("After removing vowels: New string: "+validate(text));
		text = "MID-CENTRALIZED";
		System.out.println("\nOriginal string: "+text);
		System.out.println("After removing vowels: New string: "+validate(text));
		text = "C++";
		System.out.println("\nOriginal string: "+text);
		System.out.println("After removing vowels: New string: "+validate(text));
        }

   public static String validate(String text) {
	   String result = text.replaceAll("(?i)[aeiou]", "");
	   return result;
  }
}

Sample Output:

Original string: LOWERED
After removing vowels: New string: LWRD

Original string: Java
After removing vowels: New string: Jv

Original string: MID-CENTRALIZED
After removing vowels: New string: MD-CNTRLZD

Original string: C++
After removing vowels: New string: C++

Pictorial Presentation:

Flowchart :

Sample Solution-2:

Java Code:

public class test {
 
   public static void main(String[] args) {	   
	    String text = "LOWERED";
		System.out.println("Original string: "+text);
		System.out.println("After removing vowels: New string: "+validate(text));
		text = "Java";
		System.out.println("\nOriginal string: "+text);
		System.out.println("After removing vowels: New string: "+validate(text));
		text = "MID-CENTRALIZED";
		System.out.println("\nOriginal string: "+text);
		System.out.println("After removing vowels: New string: "+validate(text));
		text = "C++";
		System.out.println("\nOriginal string: "+text);
		System.out.println("After removing vowels: New string: "+validate(text));
        }

   public static String validate(String text) {
	   String result = text.replaceAll("[aeiouAEIOU]","");
	   return result;
  }
}

Sample Output:

Original string: LOWERED
After removing vowels: New string: LWRD

Original string: Java
After removing vowels: New string: Jv

Original string: MID-CENTRALIZED
After removing vowels: New string: MD-CNTRLZD

Original string: C++
After removing vowels: New string: C++

Flowchart :

For more Practice: Solve these Related Problems:

• Write a Java program to remove all vowel characters from a string using regex replacement.
• Write a Java program to iterate through a string and construct a new string that omits all vowels.
• Write a Java program to implement a method that filters vowels out of a string using Java streams.
• Write a Java program to compare the performance of vowel removal using regex versus manual iteration.

Go to:

• Java Regular Expression Exercises Home ↩
• Java Exercises Home ↩

PREV : Count Vowels with Regex.

Java Code Editor:

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