Designers use ____________________ within paragraphs to aid readability and to indicate relationships among slide elements.

Which of the following is a key benefit of using JDBC?

a. It is a simple-to-use database management system. b. Allows developers to change the underlying database without modifying the Java code. c. It is a multi-platform database management system. d. It provides a GUI for database management systems.

The following code fragment is an implementation of the count-controlled traversal of a singly linked list from Section3.4.5. Does it work? If not, explain the problem and how to fix it. (Note: this.length is the number of data nodes in the linked list and assume the visit() method is implemented and works properly.)

``` SLNode cursor = head.getSuccessor(); for ( int count = 0; count <= this.length; count++ ) { visit(cursor); cursor = cursor.getSuccessor(); } ```