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

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

String regex="^java":-Defining regression as string. Here (^java) means all the words which are named as java .

Pattern.CASE_INSENSITIVE| Pattern.MULTILINE:-This enables the pattern to match case insensitive. The word can either be in caps or not.

Matching_Casesensitive.java

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Matching_Casesensitive {   public static void main(String[] args) {     String regex="^java";  Pattern pattern = Pattern.compile(regex,   Pattern.CASE_INSENSITIVE| Pattern.MULTILINE);  String text="java has classes\n"   +"Java has methods\n"   + "JAVA have regular expressions\n"   + "Regular expressions are in Java";  System.out.println("Words from the Text is:-");   System.out.println(text);   System.out.println("========================");  Matcher m = pattern.matcher(text);     System.out.println("Finded words from the Text is:-");  while (m.find())   System.out.println(m.group());   }}

Output of the program:-

Words from the Text is:- java has classes Java has methods JAVA have regular expressions Regular expressions are in Java ======================== Finded words from the Text is:- java Java JAVA

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