which is better? new a object or convert itslef

[tony macmillan]

package test;

import java.math.BigDecimal;
import java.util.HashMap;

public class Mytest {

public static void main(String[] args){
HashMap map = new HashMap();
BigDecimal test = new BigDecimal("100");
map.put("A",test);
BigDecimal test1 = new BigDecimal(map.get("A").toString()); //1
BigDecimal test2 = (BigDecimal)map.get("A"); //2
}
}
}
Somebody told me that the type 1 is as same as type 2, but I don�ｔ think so. type 2 is faster than type 1 , isn's it?

[Ernest Friedman-Hill]

Version 2 is vastly faster, yes. Parsing the string to determine a value for the new BigDecimal is a relatively expensive operation.

[tony macmillan]

thanks a lot!