Regular Expressions in Java

Java module J816

Exercises, examples and other material relating to training module J816. This module is presented on Private Courses and Specially Run Courses only

As from release 1.4, Java 2 comes with a regular expression class that supports patterns similar in style to Perl regular expressions. This module gives you a brief introduction to regular expressions if you're not already familiar with them, then covers Java-specific topics such as compile and match methods, Pattern objects and PatternSyntaxExceptions.

Related technical and longer articles

Regular Expressions in Java

Articles and tips on this subject		updated
1195	Regular Express Primer Over the years I've been teaching people about Regular Expressions, I've learnt what does and doesn't work in such tuition. A casual question I saw yesterday got me writing, and I've just posted up a new technical article to the solution centre - see here (it will open in a separate window). It's ...	2007-05-21

Examples from our training material

Reg1.java	Regular expressions - look for email address
Reg2.java	Regular expressions - look for all matching lines in a file
Reg3.java	Look for all lines containing a term and report the first field from matching lines
Reg4.java	Look for email address on command line and report on user and domain name parts
Reg6.java	Regular expressions - match and replace

Background information

Some modules are available for download as a sample of our material or under an Open Training Notes License for free download from [here].

Topics covered in this module

Basic handling of strings.
An introduction to regular expressions.
The elements of a regular expression..
Expanding the power of regular expressions.
Literal Characters.
Anchors and Assertions.
Character Groups.
Counts.
An Example.
Expanding the power of pattern objects.
Flags.
Splitting.
The Matcher.
Capturing the String that matched a pattern.
Using regular expressions to replace one string by another.
Other regular expression topics.
Exceptions.
Extending Regular Expressions.
Operations on StringBuffers.

Complete learning

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