Java 2 Exam Notes (Programmer's Exam)

by Heller, Philip

• ISBN13: 9780782128260
• ISBN10: 0782128262
• Edition: 1st
• Format: Paperback
• Copyright: 2000-12-05
• Publisher: Sybex

Summary

Java 2 Exam Notes is the fastest and most effective way to make sure you're ready to pass the Java 2 Programmer's Exam. The unique, innovative Exam Notes approach helps you gain and retain the knowledge you need, objective by objective: * Critical Information sections provide detailed analyses of the key issues for each exam objective. * Exam Essentials sections highlight crucial subject areas you'll need to know for the exam. * Key Terms and Concepts sections define the words and concepts vital to passing the exam. * Sample Questions sections preview the types of questions found on the exam and give answers and explanations. Get Ready for the Exam with the Complete Java 2 Certification Study Guide * In-Depth Coverage of the Programmer's and Developer's Exams

Author Biography

Philip Heller, is a lead consultant in the Java industry. He is a dynamic speaker and educator who has taught courses in the Java University at Sun Mircrosystems Java events around the US. An authority on Java Certification, he has coauthored the best-selling Complete Java 2 Certification Study Guide from Sybex.

Table of Contents

Introduction	xvii
Declarations and Access Control	1	(28)
Write code that declares, constructs, and initializes arrays of any base type using any of the permitted forms both for declaration and for initialization.	2	(5)
Declare classes, inner classes, methods, instance variables, static variables, and automatic (method local) variables, making appropriate use of all permitted modifiers (such as public, final, static, abstract, and so forth). State the significance of each of these modifiers, both singly and in combination, and state the effect of package relationships on declared items qualified by these modifiers.	7	(17)
For a given class, determine if a default constructor will be created and, if so, state the prototype of that constructor.	24	(2)
State the legal return types for any method, given the declarations of all related methods in this or parent classes.	26	(3)
Flow Control and Exception Handling	29	(20)
Write code using if and switch statements and identify legal argument types for these statements.	30	(3)
Write code using all forms of loops including labeled and unlabeled use of break and continue and state the values taken by loop control variables during and after loop execution.	33	(8)
Write code that makes proper use of exceptions and exception handling clauses (try, catch, finally) and declare methods and overriding methods that throw exceptions.	41	(8)
Garbage Collection	49	(8)
State the behavior that is guaranteed by the garbage collection system and write code that explicitly makes objects eligible for collection.	50	(7)
Language Fundamentals	57	(28)
Identify correctly constructed source files, package declarations, import statements, class declarations (of all forms including inner classes), interface declarations and implementations (for java.lang.Runnable or other interface described in the test), method declarations (including the main method that is used to start execution of a class), variable declarations and identifiers.	58	(12)
State the correspondence between index values in the argument array passed to a main method and command line arguments.	70	(3)
Identify all Java programming language keywords and correctly constructed identifiers.	73	(3)
State the effect of using a variable or array element of any kind when no explicit assignment has been made to it.	76	(3)
State the range of all primitive data types and declare literal values for String and all primitive types using all permitted formats, bases, and representations.	79	(6)
Operators and Assignments	85	(24)
Determine the result of applying any operator, including assignment operators, instanceof, and casts, to operands of any type class, scope or accessibility, or any combination of these.	86	(15)
Determine the result of applying boolean equals(Object) method to objects of any combination of the classes java.lang.String, java.lang.Boolean, and java.lang.Object.	101	(3)
In an expression involving the operators &, I, &&, II, and variables of known values, state which operands are evaluated and the value of the expression.	104	(1)
Determine the effect upon objects and primitive values of passing variables into methods and performing assignments or other modifying operations in that method.	104	(5)
Overloading, Overriding, Runtime Type, and Object Orientation	109	(24)
State the benefits of encapsulation in object-oriented design and write code that implements tightly encapsulated classes and the relationships ``is a'' and ``has a''.	110	(4)
Write code to invoke overridden or overloaded methods and parental or overloaded constructors; and describe the effect of invoking these methods.	114	(10)
Write code to construct instances of any concrete class including normal top level classes, inner classes, static inner classes, and anonymous inner classes.	124	(9)
Threads	133	(20)
Write code to define, instantiate, and start new threads using both java.lang.Thread and java.lang.Runnable.	134	(4)
Recognize conditions that might prevent a thread from executing.	138	(5)
Write code using synchronized, wait, notify, and notify All to protect against concurrent access problems and to communicate between threads. Define the interaction between threads and between threads and object locks when executing sychronized, wait, notify, or notifyAll.	143	(10)
The java.awt Package	153	(18)
Write code using Component, Container, and Layout Manager classes of the java.awt package to present a GUI with the specified appearance and resize behavior, and distinguish the responsibilities of layout managers from those of containers.	154	(10)
Write code to implement listener classes and methods, and in listener methods, extract information from the event to determine the affected component, mouse position, nature, and time of the event. State the event classname for any specified event listener in the java.awt.event package.	164	(7)
The java.lang Package	171	(14)
Write code using the following methods of the java.lang.Math class: abs(), ceil(), floor(), max(), min(), random(), round(), sin(), cos(), tan(), sqrt().	172	(7)
Describe the significance of the immutability of String objects.	179	(6)
The java.util Package	185	(14)
Make appropriate selection of collection classes/interfaces to suit specified behavior requirements.	186	(13)
The java.io Package	199	(18)
Write code that uses objects of the File class to navigate a file system.	200	(3)
Write code that uses objects of the classes InputStreamReader and OutputStreamWriter to translate between Unicode and either platform default or ISO 8859-1 character encodings, and distinguish between conditions under which platform default encoding conversion should be used and conditions under which a specific conversion should be used.	203	(4)
Select valid constructor arguments for FilterInputStream and FilterOutputStream subclasses from a list of classes in the java.io.package.	207	(2)
Write appropriate code to read, write and update files using FileInputStream, FileOutputStream, and RandomAccessFile objects.	209	(4)
Describe the permanent effects on the file system of constructing and using FileInputStream, FileOutputStream, and RandomAccessFile objects.	213	(4)
Appendix A The Certification Initiative for Enterprise Development	217	(20)
The Structure of the Initiative	219	(1)
The Second-Level Exams	219	(11)
The Third-Level Exams	230	(7)
Glossary	237	(9)
Index	246