Regular Expressions in Java

Regular Expressions in Java - module J816

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.

This topic is presented on Private Courses and Specially Run Courses only

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

More web pages on this subject

Regular Expressions in Java

Specialist books

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 http://www.training-notes.co.uk.

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.

Course links

The following web pages are used as references / examples in this module

[Link] Jakarta Regexp - Regexp
(at http://jakarta.apache.org/regexp/index.html)

We check these links from time to time with a spider written in PHP. Latest full check was on Saturday, 12th June 2004. Titles are extracted from the web pages listed.

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