How to connect MySQL with Java?

Question

I have installed MYSQLSERVER 5.1.Then I installed mysql-connector-java-3.0.8-stable-bin.jar and put in drive c with folder core that is C:\\core.Then in propert

Answer 1

You should be getting NPE. As you are executing your query on dbCon and not on dbcon

// initialize here
Connection dbcon = DriverManager.getConnection(  
                "jdbc:mysql://localhost:3306/EMPLOYEE", "root", "root");  

String query ="select count(*) from EMPLOYEE4 ";

// Null here
Connection dbCon = null;

// on dbCon which is null 
stmt = dbCon.prepareStatement(query);

EDIT

This how your code suppose to look like.

Connection dbcon = DriverManager.getConnection(  
                    "jdbc:mysql://localhost:3306/EMPLOYEE", "root", "root"); 
String query = "select count(*) from EMPLOYEE4 ";
Statement stmt = dbcon.createStatement();
ResultSet rs = stmt.executeQuery(query);