What You will Learn?

• Using the Test Method
• Match Literal Strings
• Match a Literal String with Different Possibilities
• Ignore Case While Matching
• Extract Matches
• Find More Than the First Match
• Match Anything with Wildcard Period
• Match Single Character with Multiple Possibilities
• Match Letters of the Alphabet
• Match Numbers and Letters of the Alphabet
• Match Single Characters Not Specified
• Match Characters that Occur One or More Times
• Match Characters that Occur Zero or More Times
• Find Characters with Lazy Matching
• Find One or More Criminals in a Hunt
• Match Beginning String Patterns
• Match Ending String Patterns
• Match All Letters and Numbers
• Match Everything But Letters and Numbers
• Match All Numbers
• Match All Non-Numbers
• Restrict Possible Usernames
• Match Whitespace
• Match Non-Whitespace Characters
• Specify Upper and Lower Number of Matches
• Specify Only the Lower Number of Matches
• Specify Exact Number of Matches
• Check for All or None
• Positive and Negative Lookahead
• Reuse Patterns Using Capture Groups
• Use Capture Groups to Search and Replace
• Remove Whitespace from Start and End