Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Java Articles
Page 361 of 450
Regular Expression "D" Metacharacter in Java
The subexpression/metacharacter “\D” matches the non-digits.Example 1import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexExample { public static void main( String args[] ) { String regex = "\D"; String input = "This is sample text 12 24 56 89 24"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; while(m.find()) { count++; } System.out.println("Number of matches: "+count); } }OutputNumber of matches: 24Example 2import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern; public ...
Read MoreRegular Expression "d" construct in Java
The subexpression/metacharacter “\d” matches the digits.Example 1import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexExample { public static void main( String args[] ) { String regex = "\d 24"; String input = "This is sample text 12 24 56 89 24"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; while(m.find()) { count++; } System.out.println("Number of matches: "+count); } }OutputNumber of matches: 2Example 2Following is a Java program that ...
Read MoreRegular Expression "S" Metacharacter in Java
The subexpression/metacharacter “\S” matches the non-white space characters.Example 1import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexExample { public static void main( String args[] ) { String regex = "\S"; String input = "Hello how are you welcome to Tutorialspoint !"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; while(m.find()) { count++; } System.out.println("Number of matches: "+count); } }OutputNumber of matches: 38Example 2import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern; ...
Read MoreExplain Regular Expression "s" Metacharacter in Java
The subexpression/metacharacter “\s” matches the white space equivalent.Example 1import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexExample { public static void main( String args[] ) { String regex = "\s"; String input = "Hello how are you welcome to Tutorialspoint !"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; while(m.find()) { count++; } System.out.println("Number of matches: "+count); } }OutputNumber of matches: 7Example 2The following example reads a string ...
Read MoreRegular Expression "W" Metacharacter in Java
The subexpression/metacharacter “\W” matches the non-word characters.Example1import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexExample { public static void main(String args[]) { String regex = "\W!"; String input = "Hello how are you welcome to Tutorialspoint !"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; while(m.find()) { count++; } System.out.println("Number of matches: "+count); } }OutputNumber of matches: 1Example2Following example reads 5 string values and prints those that contain ...
Read MoreExplain Regular Expression "w" Metacharacter in Java
The subexpression/metacharacter “\w” matches the word characters i.e. a to z and A to Z and 0 to 9.Example 1import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexExample { public static void main( String args[] ) { String regex = "\w to"; String input = "Hello how are you welcome to Tutorialspoint"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; while(m.find()) { count++; } System.out.println("Number of matches: "+count); ...
Read MoreRegular Expression a|b Metacharacter in Java
The subexpression/metacharacter “a| b” matches either a or b.Example 1import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexExample { public static void main( String args[] ) { String regex = "Hello|welcome"; String input = "Hello how are you welcome to Tutorialspoint"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; while(m.find()) { count++; } System.out.println("Number of matches: "+count); } }OutputNumber of matches: 2Example 2The following Java program reads gender ...
Read MoreRegular Expression re{ n, m} Metacharacter in Java
The subexpression/metacharacter “re{ n, m}” matches at least n and at most m occurrences of the preceding expression.Example 1import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexExample { public static void main( String args[] ) { String regex = "xyy{2, 4}"; String input = "xxyyzxxyyyyxyyzxxyyzz"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; while(m.find()) { count++; } System.out.println("Number of matches: "+count); } }OutputNumber of matches: 1Example 2The following ...
Read MoreRegular Expression re{ n} Metacharacter in Java
The subexpression/metacharacter “re{ n}” matches exactly n number of occurrences of the preceding expression.Example 1import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexExample { public static void main( String args[] ) { String regex = "to{1}"; String input = "Welcome to Tutorialspoint"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; while(m.find()) { count++; } System.out.println("Number of matches: "+count); } }OutputNumber of matches: 2Example 2Following Java program reads age ...
Read MoreRegular Expression re+ Metacharacter in Java
The subexpression/metacharacter “re+” matches one or more occurrences of the preceding expression.Example 1import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegexExample { public static void main( String args[] ) { String regex = "aabc+"; String input = "aabcabcaabcabbcaabcbcaabc"; Pattern p = Pattern.compile(regex); Matcher m = p.matcher(input); int count = 0; while(m.find()) { count++; } System.out.println("Number of matches: "+count); } }OutputNumber of matches: 4Example 2import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Test ...
Read More