Oracle 1z0-808 問題集

質問 1：
Given:

What is the result?
A. Compilation fails at line n1 and line n2.
B. Welcome Visit Count:1Welcome Visit Count: 2
C. Welcome Visit Count:1Welcome Visit Count: 2
D. Compilation fails at line n3 and line n4.
正解：A

質問 2：
What is the result?
Class StaticField {
static int i = 7;
public static void main(String[] args) {
StaticFied obj = new StaticField();
obj.i++;
StaticField.i++;
obj.i++;
System.out.println(StaticField.i + " "+ obj.i);
}
}
A. 7 10
B. 10 10
C. 9 8
D. 8 9
正解：B

質問 3：
Consider following interface.

Which of the following will create instance of Runnable type?
A. Runnable run = 0 -> {System.out.println("Run");}
B. Runnable run = > System.ouLprintlnfRun"};
C. Runnable run = 0 -> System.outprintlnfRun");
D. Runnable run = 0 > System.outprintlnfRun");
E. None of the above.
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 4：
Given the code fragment:

What is the result?
A. 1 3
1 3
B. 1 3
followed by an ArrayIndexOutOfBoundsException
C. Compilation fails.
D. 1 3
1 3 0 0
E. 1 3 5 7
1 3
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 5：
Given the code fragments:

What is the result?
A. Compilation fails only at line n1.
B. Tool::export
Tool::export
C. Compilation fails at both line n1 and line2.
D. RTool::export
Tool::export
E. Compilation fails only at line n2.
正解：A

質問 6：
Given the code fragment:

Which option represents the state of the num array after successful completion of the outer loop?

A. Option A
B. Option C
C. Option D
D. Option B
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 7：
Which two initialization statements are valid? (Choose two.)
A. Boolean available = "TRUE":
B. String tmpAuthor = author, author ="Mc Donald";
C. Double price = 200D;
D. Integer pages = 20;
正解：C,D
解説: (Topexam メンバーにのみ表示されます)

質問 8：
Given the code fragment:

Test.java:

Which is the result?
A. Both the Employee class and the Test class fail to compile.
B.
C.
D. Compilation fails in the Employee class.

E. Compilation fails in the Test class.
正解：E

質問 9：
Which statement is true about the default constructor of a top-level class?
A. The default constructor of a subclass always invokes the no-argument constructor of its superclass.
B. It can take arguments.
C. It has private access modifier in its declaration.
D. It can be overloaded.
正解：A
解説: (Topexam メンバーにのみ表示されます)