java-regular-expression

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Check if an URL is valid or not using Regular Expression

Last Updated: 07 December 2022

Given a URL as a character string str of size N.The task is to check if the given URL is valid or not.Examples :Input : str = "https://www.geeksforgeeks.org/"Output : YesE ...read more

Strings

Pattern Searching

python-regex

java-regular-expression

How to validate a domain name using Regular Expression

Last Updated: 20 December 2022

Given string str, the task is to check whether the given string is a valid domain name or not by using Regular Expression.The valid domain name must satisfy the following ...read more

Strings

Pattern Searching

java-regular-expression

CPP-regex

regular-expression

DSA

How to check string is alphanumeric or not using Regular Expression

Last Updated: 03 January 2023

Given string str, the task is to check whether the string is alphanumeric or not by using Regular Expression.An alphanumeric string is a string that contains only alphabet ...read more

Strings

Pattern Searching

java-regular-expression

CPP-regex

DSA

How to validate PAN Card number using Regular Expression

Last Updated: 26 December 2022

Given string str of alphanumeric characters, the task is to check whether the string is a valid PAN (Permanent Account Number) Card number or not by using Regular Expressi ...read more

Strings

Pattern Searching

java-regular-expression

CPP-regex

DSA

How to validate a Password using Regular Expressions in Java

Last Updated: 31 January 2023

Given a password, the task is to validate the password with the help of Regular Expression. A password is considered valid if all the following constraints are satisfied:I ...read more

Strings

Java

Java Programs

java-regular-expression

DSA

How to validate an IP address using Regular Expressions in Java

Last Updated: 10 June 2021

Given an IP address, the task is to validate this IP address with the help of Regular Expressions.The IP address is a string in the form "A.B.C.D", where the value of A, B ...read more

Java

Technical Scripter

Computer Networks

java-regular-expression

Technical Scripter 2019

Check if a String Contains only Alphabets in Java using Regex

Last Updated: 05 April 2022

Regular Expressions or Regex is an API for defining String patterns that can be used for searching, manipulating, and editing a text. It is widely used to define a constra ...read more

Java

Java-Strings

java-regular-expression

Java-String-Programs

Program to check valid mobile number

Last Updated: 19 April 2023

Mobile Number validation criteria:The first digit should contain numbers between 6 to 9.The rest 9 digit can contain any number between 0 to 9.The mobile number can have 1 ...read more

Java

Java-Strings

java-regular-expression

Java-String-Programs

String matches() Method in Java with Examples

Last Updated: 07 August 2023

Variants of matches() method is used to tell more precisely not test whether the given string matches to a regular expression or not as whenever this method is called in i...read more

java-regular-expression

Program to remove vowels from a String

Last Updated: 16 February 2023

Given a string, remove the vowels from the string and print the string without vowels.Examples:Input : welcome to geeksforgeeksOutput : wlcm t gksfrgksInput : what is your ...read more

Strings

Searching

vowel-consonant

java-regular-expression

DSA

Basic Coding Problems

Split() String method in Java with examples

Last Updated: 22 May 2023

The string split() method breaks a given string around matches of the given regular expression. After splitting against the given regular expression, this method returns a ...read more

java-regular-expression

Regular Expressions in Java

Last Updated: 21 September 2023

In Java, Regular Expressions or Regex (in short) in Java is an API for defining String patterns that can be used for searching, manipulating, and editing a string in Java....read more

Java

Technical Scripter

java-regular-expression

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