Replace first three digits with 'digit' : Regular Expressions « Development « Java Tutorial

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Java Tutorial » Development » Regular Expressions

6. 32. 9. Replace first three digits with 'digit'


public class MainClass

{

   public static void main( String args[] )

   {

      String firstString = "This sentence ends in 5 stars *****";

      String secondString = "1, 2, 3, 4, 5, 6, 7, 8";

         

      System.out.printf( "Original String 1: %s\n", firstString );



      // replace first three digits with 'digit'     

      for ( int i = 0; i < 3; i++ )

         secondString = secondString.replaceFirst( "\\d", "digit" );



      System.out.printf( 

         "First 3 digits replaced by \"digit\" : %s\n", secondString );



   }

}

Original String 1: This sentence ends in 5 stars *****
First 3 digits replaced by "digit" : digit, digit, digit, 4, 5, 6, 7, 8

6. 32. Regular Expressions
	6. 32. 1.	Validate the first name and last name
	6. 32. 2.	Validate Address
	6. 32. 3.	Validate city and state
	6. 32. 4.	Validate Zip
	6. 32. 5.	Validate Phone
	6. 32. 6.	Replace '*' with '^'
	6. 32. 7.	Replace one string with another string
	6. 32. 8.	Replace all words with another string
	6. 32. 9.	Replace first three digits with 'digit'
	6. 32. 10.	Split string with comma
	6. 32. 11.	Pattern match: J.*\\d[0-35-9]-\\d\\d-\\d\\d

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