Regular Expressions 

1. Matching Pattern using Regularexpression
   This Example describe the way to match a pattern with the text by using Regularexpression.
           
2. Interchanging String using RegularExpression
   This Example describe the way to split a String and interchange the index of string using Regularexpression.
              
3. Split Demo using RegularExpression
   This Example describe the way to Split a String using Regularexpression. 
             
4. Replacing String using Regularexpression
   This Example describe the way to replace a String using Regularexpression. 
            
5. Print Matchingwords using Regular expression
   This Example describe the way to print the matching word from the file using Regularexpression.
             
6. Listing Directory using Regular expression
   This Example describe the way how to list the directory by using Regularexpression.
               
7. Calculating Repetingwords using Regular expression
   This Example describe the way to calculate the Repeating word from the file using Regularexpression.
                
8. Retrieving String by using Regular Expression
   This Example describes the way to retrieve the String using Regular expression.
             
9. Retrieving String after given Regular expression
   This Example describes the way to retrieve the String after giving expression.For this we are going to make program named Lookbehind.java.
                
10. Retrieve the String using expression
    This Example describes the way to retrieve the String using expression.For this we are going to make program named NotLookahead.java.
                
11. Finding a given word using regular expression
    This Example describes the way to find a given word from the String and also the no of times the word exists using regular expression.For this we are going to make program named Find.java.
                
12. Matching Address using regular expressions
    This Example describes the way to match address using regular expression.For this we are going to make program named Matching.java.
                   
13. Replacing the first subsequence of the input
    This Example describes the way to replace only the first subsequence of the String using regular expression. For this we are going to make program named Replace_First.java.
                
14. Pointing last index of the Matcher
    This Example describes the way to point the matcher and also indicate the last index of the matcher using expression.For this we are going to make program named Matcher_end.java.
                 
15. Pointing and indicating matcher using regular expression
    This Example describes the way to point the matcher and also indicate the index of the matcher using regular expression. For this we are going to make program named Indicating_Matcher.java.
                
16. Finding word using regular expression
    This Example describes the way to find the word from the String using expression. For this we are going to make program named Findone.java.
                
17. Appending and replacing string using regular expression
    This Example describes the way to append the String with the existing one using expression. For this we are going to make program named Appendreplacement.java.
              
18. Split string after each character using regular expression
    This Example describes the way to split the String after each character using expression. For this we are going to make program named SplittingFind. java.
               
19. Reset the matcher using regular expression
    This Example describes the way to retrieve the String using regular expression. For this we are going to make program named Reset. java.
               
20. Replacing all the text of String using expression
    This Example describes the way to Replace certain part of the whole String using regular expression. For this we are going to make program named Replaceall.java.
                
21. Pattern resetting using regular expression
    This Example describes the way to retrieve the String using regular expression. For this we are going to make program named Pattern_Resetting.java.
               
22. Match string using regular expression without Case sensitivity
    This Example describes the way to match the String using regular expression. For this we are going to make program named Matching_Casesensitive.java. 
              
23. Matching Zip code using regular expression
    This Example describes the way of matching Zip code with the regular expression .For this we are going to make program named Matching_Zipcode.java.
              
24. Finding start and end index of string using Regular expression
    This Example describes the way for finding start and end index of the string using regular expression. For this we are going to make program named Finding_index.java.