Which code should be inserted at line 1 of Demo.java to compile and run Demo toprint "pizzapizza"?()
A.import utils.*;
B.static import utils.*;
C.import utils.Repetition.*;
D.static import utils.Repetition.*;
E.import utils.Repetition.twice();
F.import static utils.Repetition.twice;
G.static import utils.Repetition.twice;
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What is the result?()
A.test
B.null
C.An exception is thrown at runtime.
D.Compilation fails because of an error in line 1.
E.Compilation fails because of an error in line 4.
F.Compilation fails because of an error in line 5.
Which code, inserted at line 14, allows the Sprite class to compile?()
A.Direction d = NORTH;
B.Nav.Direction d = NORTH;
C.Direction d = Direction.NORTH;
D.Nav.Direction d = Nav.Direction.NORTH;
Given a correctly compiled class whose source code is:
Assume that the class file is located in /foo/com/sun/sjcp/, the current directory is /foo/, and that the classpath contains "." (current directory).
Which command line correctly runs Commander?()
A.java Commander
B.java com.sun.sjcp.Commander
C.java com/sun/sjcp/Commander
D.java -cp com.sun.sjcp Commander
E.java -cp com/sun/sjcp Commander
A.put Poker.jar in directory /stuff/java,and set the CLASSPATH to include /stuff/java
B.put Poker.jar in directory /stuff/java,and set the CLASSPATH to include /stuff/java/*.jar
C.Put Poker.jar in directory /stuff/java,and set the CLASSPATH to include /stuff/java/Poker.jar
D.put Poker.jar in directory /stuff/java/games/cards,and set the CLASSPATH to include /stuff/java
E.put Poker.jar in directory /stuff/java/games/cards,and set the CLASSPATH to include /stuff/java/*.jar
F.put Poker.jar in directory /stuff/java/games/cards,and set the CLASSPATH to include /stuff/java/Poker.jar
What is the result?()
A.s=14
B.s=16
C.s=10
D.Compilation fails.
E.An exception is thrown at runtime.
What two must the programmer do to correct the compilation errors?()
A.insert a call to this() in the Car constructor
B.insert a call to this() in the MeGo constructor
C.insert a call to super() in the MeGo constructor
D.insert a call to super(vin) in the MeGo constructor
E.change the wheelCount variable in Car to protected
F.change line 3 in the MeGo class to super.wheelCount=3
A.Tight coupling
B.Low cohesion
C.High cohesion
D.Loose coupling
E.Weak encapsulation
F.Strong encapsulation
What are four valid examples of polymorphic method calls?()
A.x.a2();
B.z.a2();
C.z.c1();
D.z.a1();
E.y.c1();
F.x.a1();
What is the result?()
A.peep
B.bark
C.meow
D.Compilation fails.
E.An exception is thrown at runtime.
What is the result?()
A.Afoo,Afoo
B.Afoo,Bfoo
C.Bfoo,Afoo
D.Bfoo,Bfoo
E.Compilation fails.
F.An exception is thrown at runtime.
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