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1.Which Man class properly represents the
relationship "Man has a best friend who is a Dog"?
A.class Man extends Dog { }
B.class Man implements Dog { }
C.class Man { private BestFriend dog; }
D.class Man { private Dog bestFriend; }
E.class Man { private Dog; }
F.class Man { private BestFriend; }
A
nswer
:D
2.Given: 1. package test; 2. 3. class Target { 4. public String name = "hello"; 5. } What can directly access
and change the value of the variable name?
A.any class
B.only the Target class
C.any class in the test package
D.any class that extends
Target
Answer
:C
3.Click the Task button.
Answer
:
Green choice1
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>Yellow Choice1
Green choice2
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>Yellow Choice2
Green choice3
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>Yellow Choice3
Green choice
2
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>Yellow Choice5
Green choice
5
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>Yellow Choice6
Green choice1
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>Yellow Choice4
4.Give
n: 1. class ClassA { 2. public int numberOfInstances; 3. protected ClassA(int numberOfInstances)
{ 4. this.numberOfInstances = numberOfInstances; 5. } 6. } 7. public class ExtendedA extends ClassA { 8.
private ExtendedA(int numberOfInstances) { 9. super(numberOfInstances); 10. } 11. public static void
main(String[] args) { 12. ExtendedA ext = new ExtendedA(420); 13.
System.out.print(ext.numberOfInstances); 14. } 15. } Which statement is true?
A.420 is the output.