Let say you have three fields in a database and one of the fields hold the primary key. Now you want to add two values of the other fields using servlets such that the primary key is automatically added automatically(i.e auto- number) with each an every record added for the two fields.Coz I am encounting errors like the destination fields are not equal when i send the two fields excluding the primary key.
When I assign a null value to a primary key this is what I get
Cannot connect java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] You tried to assign the Null value to a variable that is not a Variant data type.
Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects.
Interface Comparable is used to allow objects of a cl…
This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed.
The idea here is to target your cell phones with
Viewers will learn about basic arrays, how to declare them, and how to use them.
Introduction and definition:
Declare an array and cover the syntax of declaring them:
Initialize every index in the created array:
Example/Features of a basic arr…