Test Bank for Java Software Solutions, 9th Edition,
Test Bank for Java Software Solutions, 9th Edition, Java Software Solutions, 9e (Lewis/Loftus) Chapter 1 Introduction TRUE/FALSE 1. All information is stored in the computer using binary numbers. ANS: T The computer is a digital device meaning that it stores information in one of two states using binary. We must determine then how to represent meaningful information (such as a name or a program instruction or an image) in binary. 2. Java is an object-oriented programming language. ANS: T Java is classified as a high-level programming language but it is also classified as an object-oriented programming language because it allows the programmer to implement data structures as classes. 3. S is used in a program to denote that a documentation comment follows. ANS: F Documentation comments follow // marks or are embedded between */ and */. S is an instruction used to output a message to the screen (the Java console window). 4. Java byte codes are directly executable whereas Java source code is not. ANS: F Neither Java source code nor Java byte codes are executable. Both must be compiled or interpreted into machine code. Java byte codes are useful however in that they are machine-independent but semi-compiled code that allows your Java code to be transmitted over the Internet and executed on another computer even if that other computer is a completely different type. 5. The Java compiler is able to find all programmer errors. ANS: F The Java compiler can find syntax errors but cannot find either logical errors (errors that are caused because of poor logic in writing the program) or run-time errors (errors that arise during the execution of the program). 6. Java is a case-sensitive language which means Current, CURRENT, and current will all reference the same identifier. ANS: F Java is case sensitive which means that Current, CURRENT, and current will all be recognized as different identifiers. This causes problems with careless programmers who do not spell an identifier consistently in terms of upper and lower case characters. 7. Code placed inside of comments will not be compiled and, therefore, will not execute. ANS: T The compiler discards comments; therefore, any code inside a comment is discarded and is not compiled. Your executable program consists only of the code that is compiled.