try
{Class.forName("java.sql.DriverManager");
Connection con=(Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/bleh","root","root");
Statement stmt=con.createStatement();
String qry="select * from admin;";
ResultSet rs=stmt.executeQuery(qry);
int i=0;
while(rs.next())
{
i++;
}
if(i==0)
{
this.setVisible(false);
new start().setVisible(true);
}
else if(i>0)
{
this.setVisible(false);
new login().setVisible(true);
}
        }
catch(Exception e)
{
JOptionPane.showMessageDialog(null,e.getMessage());
e.printStackTrace();
}

{
}