Mastering Regular Expressions in Java

Quickly familiarize yourself with regular expressions in Java and learn how to use them in various use-cases related to string manipulation.

4.5

13 Lessons

1h 20min

Join 2.9 million developers at

LEARNING OBJECTIVES

Introduction to regular expressions
Using regular expression APIs from java.util.regex package
Different types of characters, and whitespaces
Character classes, meta-characters and qualifiers
Character ranges and character repetitions
Using Pattern, Group and Matcher classes
Creating regular expression patterns using flags
Making regular expressions more accurate using modifiers
How to match single, multiple and range of characters using optional characters and wildcards
Performing search and replace operation on strings using regular expressions
Analyzing text files with regular expressions
Using named groups in regular expressions

Learning Roadmap

13 Lessons2 Quizzes

Introduction

Course Overview

Introduction to Regular Expressions

Java Regex APIs

Regular Expression APIs in Java

Replacement Methods of Matcher Class

Building Blocks of Regular Expressions

4 Lessons

Course Wrap Up

5 Lessons

Certificate of Completion

Showcase your accomplishment by sharing your certificate of completion.

Developed by MAANG Engineers

ABOUT THIS COURSE

Regular expressions describe a pattern of characters used for searching a string. They are very useful for parsing information like dates, phone numbers, or zip codes from important text files such as code files, log files, spreadsheets, or documents. Below are the most common use cases of regular expressions: - Data validation of data fields or values like phone numbers, zip codes, email addresses, etc. - Information extraction from text files for further processing - Pattern matching of strings or textual information - Search and replace operation on texts This course will teach you how to perform pattern matching with a regular expression using a Java API for these practical use cases.

ABOUT THE AUTHOR

Tarun Telang

Author of multiple books on Java, YAML, Kubernetes, Microservices and Cloud Native Development. Tarun is a Oracle Certified Java Programmer; Certified Development Consultant for Web Application Development Focus JAVA;

Learn more about Tarun

Trusted by 2.9 million developers working at companies

These are high-quality courses. Trust me the price is worth it for the content quality. Educative came at the right time in my career. I'm understanding topics better than with any book or online video tutorial I've done. Truly made for developers. Thanks

Anthony Walker

@_webarchitect_

Just finished my first full #ML course: Machine learning for Software Engineers from Educative, Inc. ... Highly recommend!

Evan Dunbar

ML Engineer

You guys are the gold standard of crash-courses... Narrow enough that it doesn't need years of study or a full blown book to get the gist, but broad enough that an afternoon of Googling doesn't cut it.

Software Developer

Carlos Matias La Borde

I spend my days and nights on Educative. It is indispensable. It is such a unique and reader-friendly site

Souvik Kundu

Front-end Developer

Your courses are simply awesome, the depth they go into and the breadth of coverage is so good that I don't have to refer to 10 different websites looking for interview topics and content.

Vinay Krishnaiah

Software Developer