Which code fragment is required to load a JDBC 3.0 driver?

• A. Class.forName("org.xyzdata.jdbc-NetworkDriver");
• B. Connection con = DriverManager.getConnection
  ("jdbc:xyzdata://localhost:3306/EmployeeDB");
• C. DriverManager.loadDriver ("org.xyzdata.jdbc.NetworkDriver");
• D. Connection con = Connection.getDriver
  ("jdbc:xyzdata://localhost:3306/EmployeeDB");

Given the following code fragment:

What is the result?

• A. Three
• B. Compilation fails
• C. The program runs, but prints no outout
• D. One

To provide meaningful output for:
System.out.print( new Item ()):
A method with which signature should be added to the Item class?

• A. public Item asString()
• B. public Item toString()
• C. public Object asString()
• D. public String toString()
• E. public String asString()
• F. public object toString()

Which represents part of a DAO design pattern?

• A. interface EmployeeDAO {
  void create (Connection c, Employee e);
  void update (Connection c, Employee e);
  void delete (Connection c, int id);
  Employee findByID (Connection c, int id); }
• B. interface EmployeeDAO {
  int getID();
  Employee findByID (intid);
  void update(); void delete(); }
• C. class EmployeeDAO {
  void create (Employee e) {}
  void update (Employee e) {}
  void delete (int id) {}
  Employee findByID (int id) {return id}
  }
• D. class EmployeeDAO {
  int getID() { return 0;}
  Employee findByID (int id) { return null;}
  void update () {}
  void delete () {}
  }
• E. interface EmployeeDAO { void create (Employee e); void update (Employee e); void delete (int id); Employee findByID (int id); }

Given these facts about Java classes in an application:
-
Class X is-a Class SuperX.
-
Class SuperX has-a public reference to a Class Z.
-
Class Y invokes public methods in Class Util.
-
Class X uses public variables in Class Util.
Which three statements are true?

• A. Class X has-a Class Z.
• B. Class X is loosely coupled to Class Util.
• C. Class SuperX's level of cohesion CANNOT be determined
• D. Class Util has weak encapsulation.
• E. Class Y demonstrates high cohesion.