"ifmy_string.endswith("aboard!"):print("The string ends with 'aboard!'")else:print("The string does not end with 'aboard!'") Output The string ends with 'aboard!' Example In this example, we define a list of suffixes and a string my_string. We then use a generator expression...
If the string does not contain the substring then it will return null. We will take an example to understand it. var actualstring = "Javascript match method", var substringToCheck = "match"; actualstring.match("match"); //["match", index: 11, input: "Javascript match method", ...
Method 2: Check if String Does Not Contain Letters Using match() Method The “match()” method in JavaScript is also used to determine whether a string contains letters or not. A string is compared to a regular expression or regex pattern using the match() method. It returns an array of...
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There are multiple ways to check if a string contains a substring in JavaScript. You can use either String.includes(), String.indexOf(), String.search(), String.match(), regular expressions, or 3rd-party library like Lodash. String.includes() Method The String.includes()provides the most ...
If it finds the matches, it returns true, and false if no match is found. Here is an example that demonstrates how you can use the matches() method to check if a string contains another substring or not: String str = "MEAN Stack stands for MongoDB, Express, Angular, and Node"; //...
And if users declare a null string, all other conditions before it will return a NullPointerException. Method 5: Using the equals() method This Java Stringclass equals() methodwill compare the two initialized strings depending on the wt users give into the string. If it does not match any...
Checking if a String is NullIn Java, a null string refers to a string variable that does not refer to any object in memory. It essentially means that the string variable has no value assigned to it. When a string is null, it cannot be used for any operations like concatenation or ...
-?\\d+ is the expression that we can match against the string and get the result in a boolean type.public class Main { public static void main(String[] args) { String str1 = "ABC123"; String str2 = "123"; String str3 = "000000009"; boolean integerOrNot1 = str1.matches("-?
Note: Set the data type of each field (except array) as String. This means that you must use double quotation marks (" ") to enclose the field value. Examples: If the data type of a field is Integer and its value is 20, set it as "20". ...