Java String endsWith() Method Examples

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Java String endsWith() method is used to test if this string ends with the given suffix string or not. This method is case sensitive.

Java String endsWith() Method Implementation

The String endsWith() method internally calls the startsWith() method. The method implementation from the Java Doc is:

public boolean endsWith(String suffix) {
    return startsWith(suffix, length() - suffix.length());
}

String endsWith() Method Example

Here is a simple example of String endsWith() method.

package net.javastring.strings;

public class JavaStringEndsWith {

	public static void main(String[] args) {
		String message = "Hello World 2019";

		System.out.println(message.endsWith("2019"));

		System.out.println(message.endsWith("2018"));

	}

}

Output:

Java String EndsWith Method
Java String endsWith() Method

What if the suffix string is empty or null?

  • If the suffix string is empty, the endsWith() method will return true.
  • If the suffix string is null, the endsWith() method will throw NullPointerException.
jshell> String msg = "Hi";
msg ==> "Hi"

jshell> msg.endsWith("");
$51 ==> true

jshell> msg.endsWith(null);
|  Exception java.lang.NullPointerException
|        at String.endsWith (String.java:1494)
|        at (#52:1)
String EndsWith Null Empty String
String endsWith() with null and Empty String

References: