[Solved] Split the number on a decimal

 public static void main(String[] args) {
        String str = "154.232";
        str = str.replaceAll("\\..*", "");
        System.out.println(str);
    }

or

str.substring(0, str.indexOf("."));

or
// check for index of . is not -1, then do following.

str.split(".")[0];

output

154