W3School TIY Editor

public class Main { public static void main(String[] args) { System.out.println(Math.log1p(6)); System.out.println(Math.log1p(Math.E)); System.out.println(Math.log1p(2)); System.out.println(Math.log1p(1)); System.out.println(Math.log1p(0)); System.out.println(Math.log1p(-1)); } }