JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Java Regular Expression Examples

This page shows examples on how to use regular expressions within java.

List Of Regular Expression Sample Programs:

  1. Simple regex pattern matching using string matches().
  2. Simple java regex using Pattern and Matcher classes.
  3. Java regex with case insensitive.
  4. How to validate IP address using regular expression?
  5. How to replace a pattern using regular expression in java?
  6. How to remove multiple spaces with a single space with in a string?
  7. How to validate user name using regular expression?
  8. How to validate email address using regular expression?
  9. How to validate password using regular expression?
  10. How to validate file extensions using regular expression in java?
  11. How to validate date format using regular expression in java?
  12. How to capture or extract a value(s) from text using regular expression in java?
  13. How to split a string using regular expression?
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Knowledge Centre
Inner class and Anonymous class
Inner class: classes defined in other classes, including those defined in methods are called inner classes. An inner class can have any accessibility including private.

Anonymous class: Anonymous class is a class defined inside a method without a name and is instantiated and declared in the same place and cannot have explicit constructors.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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