McGraw Hill_SCJP & SCJD for Java 2 Certification Study Guide.pdf

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Part I

The Programmer’s

Exam

CHAPTERS

Language Fundamentals

Java.lang—The Math Class, Strings,

and Wrappers

Declarations and Access Control

Objects and Collections

Operators and Assignments

Inner Classes

Flow Control, Exceptions, and Assertions

Threads

Object Orientation, Overloading and

Overriding, Constructors,

and Return Types

Language

Fundamentals

CERTIFICATION OBJECTIVES

• Java Programming Language Keywords

• Literals and Ranges of All Primitive

Data Types

• Array Declaration, Construction,

and Initialization

• Using a Variable or Array Element

That Is Uninitialized and Unassigned

• Command-Line Arguments to Main

✓

Two-Minute Drill

Q&A Self Test

Chapter 1: Language Fundamentals

T his chapter looks at the Java fundamentals that you need to pass the Java 1.4

CERTIFICATION OBJECTIVE

Java Programming Language Keywords

(Exam Objective 4.4)

Identify all Java programming language keywords and correctly constructed identifiers.

Keywords are special reserved words in Java that you cannot use as identifiers (names)

for classes, methods, or variables. They have meaning to the compiler; it uses them

to figure out what your source code is trying to do. Table 1-1 contains all 49 of the

reserved keywords.

Yo u must memorize these for the test; you can count on being asked to select the

keywords (and nonkeywords) from a list. Notice none of the reserved words have

TABLE 1-1

Complete List of Java Keywords

abstract boolean break byte

case

catch

char

class

const continue

default do

double else

extends final

finally float

for

goto

implements import

instanceof

int

interface long

native

new

package

private protected public return

short

static

strictfp super

switch synchronized this

throw

throws transient try

void

volatile while

assert

Programmer exam. Because you’re planning on becoming Sun certified, we assume

you already know the basics of Java, so this chapter concentrates just on the details

you’ll need for the exam. If you’re completely new to Java, this chapter (and the rest of the

book) will be confusing, despite our spectacularly cogent writing. That’s our story and we’re

sticking to it!

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