A java function to check whether an object is numeric

Rextester.java

//'main' method must be in a class 'Rextester'.
//Compiler version 1.8.0_111

import java.util.*;
import java.lang.*;

class Rextester
{  
    public static boolean isNumeric(Object parameter) {
        try {
            Long.parseLong(parameter.toString());
        }
        catch (Exception e1) {
            try {
                Double.parseDouble(parameter.toString());
            }
            catch(Exception e2) {
                return false;
            }
        }
        return true;
    }
    public static void main(String args[])
    {
        System.out.println(isNumeric("0.7777777777779999999999999"));
    }
}