Chapter 1 Quiz
Which of the following statements is correct to display Welcome to Java on the console? A. System.out.println('Welcome to Java'); B. System.out.println("Welcome to Java"); C. System.println('Welcome to Java'); D. System.out.println('Welcome to Java"); E. System.out.println("Welcome to Java');
B
Which of the following statements is correct? A. Every line in a program must end with a semicolon. B. Every statement in a program must end with a semicolon. C. Every comment line must end with a semicolon. D. Every method must end with a semicolon. E. Every class must end with a semicolon.
B
Every statement in Java ends with ________
A semicolon ( ; )
The JDK command to compile a class in the file Test.java is: A. java Test B. java Test.java C. javac Test.java D. javac Test E. JAVAC Test.java
C
The main method header is written as: A. public static void main(string[ ] args) B. public static void Main(String[ ] args) C. public static void main(String[ ] args) D. public static main(String[ ] args) E. public void main(String[ ] args)
C
________ is not an object-oriented programming language A) Java B) C++ C) C D) C# E) Python
C
____________ is an operating system A) Java B) C++ C) Windows D) Visual Basic E) Ada
C
_______ consists of a set of separate programs for developing and testing Java programs, each of which is invoked from a command line
Java JDK
Java compiler translates Java source code into ________
Java bytecode
_______ provides an integrated development environment (IDE) for rapidly developing Java programs. Editing, compiling, building, debugging, and online help are integrated in one graphical user interface
Java IDE
________ is a technical definition of the language that includes the syntax and semantics of the Java programming language
Java language specification
_________ is a software that interprets Java bytecode
Java virtual machine
_____________ is a program that runs on a computer to manage and control a computer's activities
Operating system
Suppose you define a Java class as follows: public class Test { } In order to compile this program, the source code should be stored in a file named ____________
Test.java
Due to security reasons, Java ___________ cannot run from a Web browser in the new version of Java
applets
Computer can execute the code in ____________
machine language
The speed of the CPU may be measured in __________
megahertz and gigahertz
One byte has ________ bits
8 bits
Which JDK command is correct to run a Java application in ByteCode.class? A. java ByteCode B. java ByteCode.class C. javac ByteCode.java D. javac ByteCode E. JAVAC ByteCode
A
_______ is architecture-neutral A) Java B) C++ C) C D) Ada E) Pascal
A
________ is interpreted A) Java B) C++ C) C D) Ada E) Pascal
A
___________ translates high-level language program into machine language program
A compiler
Analyze the following code. I: public class Test { public static void main(String[] args) { System.out.println("Welcome to Java!"); } } II: public class Test { public static void main(String[] args) { System.out.println("Welcome to Java!"); } } A. Both I and II can compile and run and display Welcome to Java, but the code in II has a better style than I. B. Only the code in I can compile and run and display Welcome to Java. C. Only the code in II can compile and run and display Welcome to Java. D. Both I and II can compile and run and display Welcome to Java, but the code in I has a better style than II.
D
Which of the following is not permanent storage devices? A) floppy disk B) hard disk C) flash stick D) CD-ROM E) main memory
E
The extension name of a Java bytecode file is
.class
The extension name of a Java source code file is
.java
Which of the following are the reserved words? A. public B. static C. void D. class
A, B, C, and D
Why do computers use zeros and ones?
Because digital devices have two stable states and it is natural to use one state for 0 and the other for 1
A block is enclosed inside __________
Braces
Programming style is important, because ______________. A. a program may not compile if it has a bad style B. good programming style can make a program run faster C. good programming style makes a program more readable D. good programming style helps reduce programming errors
C and D
Which of the following lines is not a Java comment? A. /** comments */ B. // comments C. -- comments D. /* comments */ E. ** comments **
C and E
________ is the brain of the computer
CPU
________ is the physical aspect of the computer that can be seen.
Hardware
Which of the following code has the best style? I: public class Test { public static void main(String[] args) { System.out.println("Welcome to Java!"); } } II: public class Test { public static void main(String[] args) { System.out.println("Welcome to Java!"); } } III: public class Test { public static void main(String[] args) { System.out.println("Welcome to Java!"); } } IV: public class Test { public static void main(String[] args) { System.out.println("Welcome to Java!"); } }
IV
________ contains predefined classes and interfaces for developing Java programs
Java API
____________ is a device to connect a computer to a local area network (LAN)
Network Interface Card (NIC)
____________ are instructions to the computer
Software and Programs
Java was developed by ____________
Sun Microsystems
If you forget to put a closing quotation mark on a string, what kind of error will be raised?
a compile error
If a program compiles fine, but it produces incorrect result, then the program suffers _________
a logic error
