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

---

Regular Expressions in Java As from release 1.4, Java 2 comes with a regular expression class that supports patterns similar in style to Perl regular expressions. This page gives ... http://www.wellho.net/solutions/java-reg ... -java.html  [longer article]

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 ... http://www.wellho.net/mouth/1195_Reg ... rimer.html  [short article]

Regular expressions - look for email address import java.util.regex.*; public class Reg1 { public static void main (String [] args) { /* Set up a pattern of the form non-spaces, an @, ... http://www.wellho.net/resources/ex.php4?item=j816/Reg1.java  [code sample]

Regular expressions - match and replace /* Look for phone numbers starting with a 0 after a space character and replace the 0 with "+44 (0)" */ import java.util.regex.*; public class Reg6 ... http://www.wellho.net/resources/ex.php4?item=j816/Reg6.java  [code sample]

Regular expressions - look for all matching lines in a file import java.util.regex.*; import java.io.*; public class Reg2 { public static void main (String [] args) throws IOException { File in = new ... http://www.wellho.net/resources/ex.php4?item=j816/Reg2.java  [code sample]

Look for all lines containing a term and report the first field from matching lines import java.util.regex.*; import java.io.*; public class Reg3 { public static void main (String [] args) throws IOException { File in = new ... http://www.wellho.net/resources/ex.php4?item=j816/Reg3.java  [code sample]

Look for email address on command line and report on user and domain name parts import java.util.regex.*; public class Reg4 { public static void main (String [] args) { Pattern email = Pattern.compile("(\\S+)@(\\S+)"); ... http://www.wellho.net/resources/ex.php4?item=j816/Reg4.java  [code sample]

---

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 module is presented on Private Courses and Specially Run Courses only

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