How to Use Regular Expression as a Substitute of endsWith() Method in Java?
So primarily discuss what is endsWith() method is, so it is a method of String class that checks whether the string ends with a specified suffix. This method returns a boolean value true or false.
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public boolean endsWith(String suff)
Parameter: specified suffix part
Return: Boolean value, here in java we only have true and false.
We can use Regular Expression / Matches as a substitute for endsWith() method in Java
- Using Regular Expression
- Using Matches
Method 1: Using Regular Expression
Regular Expressions or Regex (in short) is an API for defining String patterns that can be used for searching, manipulating, and editing a string in Java. Email validation and passwords are a few areas of strings where Regex is widely used to define the constraints. Regular Expressions are provided under java.util.regex package. This consists of 3 classes and 1 interface. The java.util.regex package primarily consists of the following three classes as depicted below in tabular format as follows:
Check whether string ends with Welcome using endsWith : true Check whether string ends with Welcome using Regex: true
Method 2: Using Matches
String.matches() method tells whether or not this string matches the given regular expression. An invocation of this method of the form str.matches(regex) yields exactly the same result as the expression Pattern.matches(regex, str).
public boolean matches(String regex);
Parameters: The regular expression to which this string is to be matched.
Return Value: This method returns true if, and only if, this string matches the given regular expression.
Check whether string starts with Welcome using endsWith : true Check whether string starts with Welcome using Matches: true