CSCE 155

Handout 19: Exam 2 Review

March 30, 2005

Problem Solving

1.  Event-Driven Programming

· Basic components of event-driven programming: event sources, listeners, handlers, and an interface that maps events to handlers.

· Basic GUI objects

· Types of events in Java

· The concept of an Interface—abstract methods and implements.

2.  Exceptions and Assertions

· Why use exceptions?

· The try-catch block

· “finally”

· Types of exceptions including user-defined ones

· Throwing exceptions, catching exceptions, propagating exceptions

· Implicitly throwing exceptions, explicitly throwing exceptions, defining a new exception

3.  Arrays

• Declaration and creation
• Multi-dimensional arrays
• Passing arrays to methods
• Returning an array from a method
• Changing the content of an array
• Using arrays within a repetition loop
• The difference between copying an array element of reference data types and primitive data types to another array element

4.  Search and Sorting

• Linear search vs. binary search
• Insertion sort, exchange sort, selection sort
• How to improve exchange sort (bubble sort)
• Merge sort, quick sort, heapsort

Java Classes and Packages

1. JFrame

2. JOptionPane

3. java.io.*

4. javax.swing.*

-- Various GUI classes, layouts, listeners