Programmer's Guide to Java Certification

Exam Objectives Identify correctly constructed package declarations, import statements, class declarations (of all forms, including inner classes), interface declarations, method declarations (including the main method that...

Basic Language Elements Like any other programming language, the Java programming language is defined by grammar rules that specify how syntactically legal constructs can be formed...

2.1 Which of the following is not a legal identifier? Select the one correct answer. a2zödipus52pickup_classca$htotal#2.2 Which statement is true? Select the one correct answer. new and delete are keywords in...

Figure gives an overview of the primitive data types in Java. Figure 2.1. in Java Primitive data types in Java can be divided into three main...

2.4 Which of the following do not denote a primitive data value in Java? Select the two correct answers. "t"'k'50.5F"hello"false2.5 Which of the following primitive data types are not...

A variable stores a value of a particular type. A variable has a name, a type, and a value associated with it. In Java, variables...

Default Values for Fields Default values for fields of primitive data types and reference types are listed in Table 2.14. The value assigned depends on the...

2.7 Which of the following lines are valid declarations? Select the three correct answers. char a = '\u0061';char 'a' = 'a';char \u= 'a';ch\u0061r a = 'a';ch'a'r a =...

The structure of a skeletal Java source file is depicted in Figure 2.2. A Java source file can have the following elements that, if present,...

2.10 What will be the result of attempting to compile this class? import java.util.*; package com.acme.toolkit; public class AClass { public Other anInstance; } class Other {...

The main() Method The mechanics of compiling and running Java applications using the Java 2 SDK are outlined in Section 1.10. The Java interpreter executes a...

2.12 Which of these are valid declarations of the main() method in order to start the execution of a Java application? Select the two correct answers. static void...

Chapter Summary The following topics were discussed in this chapter: basic language elements: identifiers, keywords, literals, white spaces, and comments primitive data types: integral, floating-point, and Booleanconverting numbers...

2.1 The following program has several errors. Modify it so that it will compile and run without errors. (See Section on page for compiling and running...