- Regular Expressions
- Harness Program
- java.util.regex package
- Pattern class
- Regular Expression Syntax
- Regular Expression : Predefined character classes
- Match any Character with .
- Match any digit with \d
- Match any word character \w
- Regular Expression : Character classes
- Range Of Characters
- Negated Character classes
- Quantifiers
- Greedy quantifiers
- Reluctant quantifiers
- Possessive quantifiers
- Greedy, Reluctant, and Possessive Quantifiers
- ? : once or not at all
- * : Match zero or more times
- + : Match one or more times
- Logical operators
- Matching one of sub expressions
- Capturing Groups
- Naming a capturing group
- Backreferences
- Boundary Matchers
- Start(^) and End($) of the Line
- Word boundary
- Escape sequence
- regular expression to validate java variable name
- Exploring Pattern class
- Match input against pattern
- Compiling regular expression
- Creating a Pattern with Flags
- Pattern.CANON_EQ
- Pattern.CASE_INSENSITIVE
- Pattern.COMMENTS
- Pattern.DOTALL
- Pattern.LITERAL
- Pattern.MULTILINE
- Pattern.UNICODE_CASE
- Split the input based on the pattern
- Get regular expression from which this pattern was compiled
- Matcher class
- How to create Matcher instance
- matches() : Match entire input sequence
- lookingAt(): Match input sequence
- find() : Find all the matches in the input
- Get the Matched sequence boundaries
- replaceAll() : Replace all the matched sequence with this sequence
- replaceFirst : Replace the first matched sequence
- matches vs find
- Lookahead and Lookbehind: Split a string by keeping delimiters
- Split a string by the pipe symbol
Friday, 7 November 2014
Regular Expressions
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