Solved : Double.parseDouble(String) not Found Error.

Problem :- Error Occured when compilling my code which gives error -
                           
                           Method parseDouble(java.lang.String) not found in class java.lang.Double.
                                double _contractNett = Double.parseDouble(_contractNet);

Solution :- After Reaserch I found that the runtime environment I was using belongs to an older version of Java, a pre-1.2 release for sure. The method 'parseDouble' was first introduced in Java 1.2. So if enyone is using Older version or Java 1.1 then he can Solve this Problem like this ....... :--

        double _contractNett = Double.valueOf(_contractNet).doubleValue();
        
That's It.... Problem solved. 
I hope It will help. :)