Insert comand in jdbc

Question

Hello;
Could anyone tell how to use the insert command in jdbc
My code write as following, but it does not work. it complains that i could not use the varible of a, if i write like that (3333, 'ghg','jhjh'), then it work.
String myString="assdsdf";  
String strQuery =  "INSERT INTO Customer Values " +
                          "(33333, myString,myString)";  / / how i put a varible of myString here?Thanks

Answer 1

Thanks, but it does not work, and the compiler does not complain anything.
public static Connection con;
try {
            //open a connection to the database
            c = DriverManager.getConnection( strUrl, strUser, strPass);
        catch (SQLException e) {
            System.out.println("Cannot connect to the database. Here is the error:");
            e.printStackTrace();
            System.exit( -1);
  try {
         //create a statement object to execute sql statements
         s = con.createStatement();
            String a="trtr";
            //our example query
            String strQuery =  "INSERT INTO Customer Values (?, ?,?,?, ?)";
            PreparedStatement pstmt = c.prepareStatement(strQuery);           
             pstmt.setInt(1, 10909);
          pstmt.setString(2, a);
          pstmt.setString(3, a);
          pstmt.setString(4, a);
          pstmt.setString(5, a);   
            s.close();
        catch (SQLException e) {
            System.out.println("Something is wrong with your SQL statements. Here is the error:");
            e.printStackTrace();
            System.exit( -1);
    }