codePointAt (int index)

public synchronized int codePointAt(int index)

Returns the character (Unicode code point) at the specified index. The index refers to char values (Unicode code units) and ranges from 0 to length()- 1.

public class StringBufferCodePointAt {
    public static void main(String args[]){
        int arr[] = {65536, 65537, 65538};
        String s = new String(arr, 0, arr.length);
        
        StringBuffer str = new StringBuffer(s);
        
        for(int i=0; i<str.length(); i++){
            System.out.print("Code point at index " + i +" is ");
            System.out.println(str.codePointAt(i));
        }
    }
}

Output

Code point at index 0 is 65536
Code point at index 1 is 56320
Code point at index 2 is 65537
Code point at index 3 is 56321
Code point at index 4 is 65538
Code point at index 5 is 56322

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