Matching Address using regular expressions

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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.

This Example describes the way to match address using regular expression.For this we are going to make program named Matching.java.

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. The steps involved in program Matching.java are described below:-

String name = "\\p{Upper}":- Creating expression for name.Here {upper} means all the name should be in upper case.

String namePattern = "("+name +"){2,3}":-Causes the resulting regular expression to match from 2 to 3 repetitions of the preceding regular expression

String regex = "^"+ namePattern + "\\w+ .*, \\w+ "+ zipCode + "$":-Combining the above 2 string and making a single expression.

retrival = address.matches(regex):-By this we are attempting to match the entire input against the pattern.

 

 

 

Matching.java:-

public class Matching {

  public static void main(String[] args) {
  match("abc 888 rohini, NY 64332");
 match("ABC 888 south ex, NY 64332-4453");
  }
  public static boolean match(String address) {
 
 boolean retrival = false;

  String name = "\\p{Upper}";

  String namePattern = "("+name +"){2,3}";

  String zipCode = "\\d{5}(-\\d{4})?";

 String regex = "^"+ namePattern + "\\w+ .*, \\w+ "
 + zipCode + "$";
  
  retrival = address.matches(regex);

  String msg = "NO MATCH\npattern:\n " + address + "\nregex is:\n "
  + regex;

  if (retrival) {
  msg = "MATCH\npattern:\n " + address + "\nregex is:\n "
  + regex;
  }
  System.out.println(msg + "\r\n");
  return retrival;
  }
  }

Output of the program:-

NO MATCH
pattern:
abc 888 rohini, NY 64332
regex is:
^(\p{Upper}){2,3}\w+ .*, \w+ \d{5}(-\d{4})?$

MATCH
pattern:
ABC 888 south ex, NY 64332-4453
regex is:
^(\p{Upper}){2,3}\w+ .*, \w+ \d{5}(-\d{4})?$


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