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...
Home Question how to check if string contains '+' character You need this instead:if(s.contains("+")) contains() method of String class does not take regular expression as a parameter, it takes normal text.EDIT:String s = "ddjdjdj+kfkfkf"; if(s.contains("+")) { String parts[] ...
public class Demo { public static void main(String []args) { String str = "5demo9"; System.out.println("String: "+str); if(str.matches("[0-9]+") && str.length() > 2) { System.out.println("String contains only digits!"); } else { System.out.println("String contains digits ...
} else if (specialChars.contains(String.valueOf(currentCharacter))) { specialCharacterPresent = true; } } return numberPresent && upperCasePresent && lowerCasePresent && specialCharacterPresent; } We should note a few things here. Basic idea is that we iterate through ourStringand check if its...
Java Code:// Importing the required Java utilities package import java.util.*; // Defining a class named Solution public class Solution { // Method to check if one string contains another string public static boolean is_str_contains(String str1, String str2) { // Checking if either of ...
In this article, we will check if any string contains a particular character or not. We will print to the webpage if it contains the character in the string otherwise not. Here's a PHP script to implement this functionality. We will be using strpos() function, which expects two parameter...
The contains() method searches the substring across the original string and returns true if and only if this string contains the specified sequence of character values, and false otherwise. Here is an example: String str = "Java is a server-side programming language."; str.contains("Java");...
{ public static boolean isnonalphanumericanylangscript(string str) { for (int i = 0; i < str.length(); i++) { char c = str.charat(i); if (!character.isletterordigit(c)) { return true; } } return false; } } but, if we want to allow only a particular language script, ...
Checking if a String is Blank Whitespace characters refer to any character that represents horizontal or vertical space but does not display a visible symbol. In Java, whitespace characters include space (‘‘), tab (‘\t’), newline (‘\n’), carriage return (‘\r’), and form feed (...
String string ="Java"; String substring ="va"; System.out.println(string.contains(substring)); Running this would yield: true Note:The.contains()method is case sensitive. If we tried looking for"Va"in ourstring, the result would befalse. ...