Intro to Java Programming Questions and Answers (Expert Solutions)

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Intro to Java Programming Questions and
Answers (Expert Solutions)

Q: Which of the following are storage devices?

Select one or more:
A. floppy disk
B. hard disk
C. flash drive

D. CD-ROM, 🗹🗹: A, B, C, and D

Q: Select the item that doesn't belong on the list.
A. software
B. machine language
C. JVM
D. bytecode

E. CPU, 🗹🗹: E

Q: The Java compiler translates source code into __________.
Select one:
A. Java bytecode
B. machine code
C. assembly language code

D. none of the above, 🗹🗹: Java bytecode

Q: For the Java program below, what file name should the source code be stored in?
public class MyProg{System.out.println( "Hello World" );}
Select one:
A. MyProg.txt
B. MyProg.docx
C. MyProg.java

D. Any file name with a .java extension, 🗹🗹: MyProg.java

Q: Which of the following is the correct way to write the header for a main method?
Select one:
A. public static void main( string [] args )

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B. public static void main( String [] args )
C. public static void Main( String [] args )

D. public static main( String [] args ), 🗹🗹: public static void main( String [] args )

Q: __________ is considered to be the brain of a computer.
Select one:
A. hardware
B. CPU
C. memory

D. disk drive, 🗹🗹: CPU

Q: Which JDK command will compile a Java program named YourProgram?
Select one:
A. java YourProgram
B. java YourProgram.java
C. javac YourProgram.java

D. javac YourProgram, 🗹🗹: javac YourProgram.java

Q: What is the output of the following program?
public class 6Times2{public static void main( String [] args ){System.out.println( "6 times
2 is 12" );}}
Select one:
A. "6 times 2 is 12"
B. 6 times 2 is 12
C. The program will not compile

D. The program will compile, but it will produce a runtime error, 🗹🗹: The program
will not compile

Q: Which of the following statements are true? (select all that apply)
Select one or more:
A. The Java compiler translates source code into machine language that can be directly
executed on a computer.
B. The output file produced by the Java compiler is architecturally neutral.
C. A Java program named MyProgram should be stored in a file named MyProgram.java.

D. The Java language is a high-level programming language., 🗹🗹: A and D

Q: What was the original name for the Java language?
Select one:
A. Java

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B. Oak
C. Maple

D. D, 🗹🗹: Oak

Q: What is the output of the following code?
public static void main( String [] args ){int a;int b = 10;a = 9;c = a + b;System.out.println( a
+ "\t" + b + "\t" + c );}
Select one:
A. 9 10 19
B. a = 9 b = 10 c = 19
C. The program will not compile and run

D. The program will compile, but a runtime error will be generated, 🗹🗹: The
program will not compile and run

Q: Which of the following is accomplished in the Java statement int myVariable; ? (select
all that apply)
Select one or more:
A. The name myVariable is made known to a portion of the program.
B. The data type int is associated with myVariable.
C. The value of myVariable is initialized to zero by default.

D. The value of myVariable is not initialized., 🗹🗹: A,B, and D

Q: Which of the following are valid Java variable names? (select all that apply)
Select one or more:
A. Hello
B. test_score
C. 4ere
D. 5+5

E. float, 🗹🗹: A and B

Q: Which of the following statements is true?
Select one:
A. The portion of a program over which a variable is known and can be referenced is
called a variable's duration.
B. The portion of a program over which a variable is known and can be referenced is
called a variable's lifetime.
C. The portion of a program over which a variable is known and can be referenced is
called a variable's scope.