Java String - codePointCount() Method

The java.lang.String.codePointCount() method returns the number of Unicode code points in the specified text range of the string. The text range starts from the specified beginIndex and ends at index endIndex - 1.

Syntax

public int codePointCount(int beginIndex,
                          int endIndex)

Parameters

`beginIndex`	specify the index to the first char of the text range.
`endIndex`	specify the index after the last char of the text range.

Return Value

Returns the number of Unicode code points in the specified text range of the string.

Exception

Throws IndexOutOfBoundsException, if the beginIndex is negative, or endIndex is larger than the length of this String, or beginIndex is larger than endIndex.

Example:

In the example below, codePointCount() method is used to count the Unicode code points in the specified text range of the string called MyString.

import java.lang.*;

public class MyClass {
  public static void main(String[] args) {
    String MyString = "Hello World!.";
    System.out.println(MyString.codePointCount(0, 10));   
  }
}

The output of the above code will be:

❮ Java.lang - String