Convert BigDecimal to a String

Question

Hi,
I'm trying to convert a BigDecimal variable to an string, last part of the code. I thought that I called a toString method from class BigDecimal by writing BigDecimal.toString(something);? I get an error message which says "cannot find symbol toString(java.math.BigDecimal" If I like to convert a Double to a String (Double.toString()) it works, why not in the BigDecimal case? According to the API it should be a method called toString.
package javaapplication6;
import java.lang.*;
import java.text.*;
import java.math.*;
import java.math.BigDecimal.*;
public class testCalc {
    /** Creates a new instance of testCalc */
    public testCalc() {
    public static String[] calc(String[] args) {
        double b = Double.parseDouble(args[0]);
        int l = args.length;
        String [] result = new String[l];
            for(int i=1; i<args.length; i++) {       
              double c=(Double.parseDouble(args))*b;
BigDecimal decimalC = new BigDecimal(Double.toString(c));
decimalC = decimalC.setScale(2, java.math.RoundingMode.HALF_UP);
result[i] = BigDecimal.toString(decimalC);
return result;

Answer 1

You're looking for static BigDecimal.toString(BigDecimal), which doesn't exist. And there's no reason for it to exist given that BigDecimal.toString() exists.
The reason that Double.toString(double) exists is because of the existence of both Double and double, and double being a native type doesn't have any methods at all so Double kindly provides some.