InIntelliJ IDEA 11you can check your Regular Expressions while coding without leaving the IDE. Just invoke the‘Check RegExp’intention action on a regular expression and play! Tip:You can turn any string into a regular expression by injecting RegExp language. Try the‘Inject Language’intention...
importjava.util.Scanner; importjava.util.regex.Matcher; importjava.util.regex.Pattern; /** * Java Program to show example of how to use regular expression * to check if Stringcontains any number or not. Instead of * using matches() method of java.lang.String,we have used Pattern ...
Let’s have a simple example that demonstrates how to use a regular expression to check if a character is alphanumeric:import java.util.regex.*; public class CheckCharAlpha { public static void main(String[] args) { char a = '4'; boolean isAlphanumeric = String.valueOf(a).matches("[...
Re: regular expression to check a string is alphanumeric only Evertjan. wrote:[color=blue] > RobG wrote on 22 sep 2004 in comp.lang.javas cript: >[color=green] >>Evertjan. wrote: >>[color=darkred] >>>the "return true/false" will prohibit the disallowed char displaying[/color] >...
It is convenient in conditional cases to further operate the functions. So, the general form is regular_expression.test(string). Let’s jump to the code. Code Snippet: var string = 'abc123 is a ridiculous name'; var regularExpression = /\w\d+/; var found = regularExpression.test(stri...
To check if a String contains a special character in Java, you can use a regular expression to match any character that is not a letter or a digit. Here is an example of how to do this: import java.util.regex.Matcher; import java.util.regex.Pattern; public class SpecialCharacterExample...
To check if a string contains only digits in Java, you can use the matches() method of the String class in combination with the regular expression "\\d+". The matches() method returns true if the string matches the regular expression, and false if it does not. Here is an example of...
Java Regular Expression: Exercise-26 with Solution Write a Java program to check whether a given string is valid hex code or not. A hexadecimal color value is a six-digit code preceded by a # sign, and is exactly 6 characters in length. Each character must be an alphabetic character from...
Here is a good article to learn more about regular expression in Java. Conclusion That's all folks. In this article, we have discussed various ways to check if a string contains another string in Java. You can use any of the methods above depending on your needs. It is recommended to ...
Java in General Rama Krishna Ranch Hand Posts: 110 posted 15 years ago Am unable to create the Regular expression to check for specific special characters (any repitition) and 0 to 9 numbers with a total of 15 characters! Checking number of digits occurring specific number of times is as si...