I'm having problems performing math in JSP. I have a line:
double percentage = (useful / nonuseful) * 100;
which is giving me an error, how do I fix this?
<% double useful = 12; double nonuseful = 24; double percentage = ( useful / nonuseful ) * 100; %> <%= percentage %>
In this example it will be 50.0 in the JSP page.
Okay now I'm getting errors about doubles and integers the values in the database are stored as doubles
Type mismatch: cannot convert from double to int
136: double useful = columns.getDouble("Customer_Useful");
137: double nonuseful = columns.getDouble("Customer_NotUseful");
138: votes = useful + nonuseful;
139: double percentage = (useful / nonuseful) * 100;
Can you paste me the whole code. Including variable declaration. Some where in the declaration a variable have been declared int.
Its ok its been solved now