1z0-808問題集、Oracle実際の試験問題

質問 1

Given the code in a file Traveler.java:

And the commands:
Javac Traveler.java
Java Traveler Java Duke
What is the result?

A. An exception is thrown at runtime

B. Happy Journey! Duke

C. The program fails to execute due to a runtime error

D. Happy Journey! Java

正解: B

質問 2

Given the code fragment:

Test.java:

Which is the result?

A.

B. Both the Employee class and the Test class fail to compile.

C. Compilation fails in the Employee class.

D. Compilation fails in the Test class.

E.

正解: D

質問 3

Given the code fragment:
public class ForTest {
public static void main(String[] args) {
int[] array = {1, 2, 3};
for ( foo ) {
}
}
Which three code fragments, when replaced individually for foo, enables the program to compile?

A. ; ;

B. i = 0; i<1;

C. int i = 0; i < 1;

D. ; i < 1; i++

E. int i : array

正解: A,C,E

質問 4

Given:

What is the result?

A. The loop executes infinite times

B. 1

C. 1

D. Compilation fails

E. 2

正解: A

質問 5

Given the code fragment:

You want the code to print:
Sold: 5 items.
Stock in Hand: 5
Purchased: 5 items.
Stock in Hand: 10?
Which action enables the code to print this?

A. Declare the stock variable static.

B. Declare the stock variable and the printStock() method static.

C. Declare the stock variable and the purchase(), sell(), and printStock() methods static.

D. Declare the stock and qty variables and the printStock() method static.

正解: D

質問 6

Which three statements are true about the structure of a Java class?

A. The methods are mandatory components of a class.

B. A public class must have a main method.

C. A class can have overloaded static methods.

D. A class can have only one private constructor.

E. The fields need not be initialized before use.

F. A method can have the same name as a field.

正解: C,E,F

質問 7

Given:

Which is true?

A. Sum for 0 to 0 = 55

B. Compilation fails due to error on line 7.

C. Compilation fails due to error on line 6.

D. Sum for 0 to 10 = 55

E. An Exception is thrown at the runtime.

正解: B

解説: (PassTest メンバーにのみ表示されます)

質問 8

Given the code fragment:

What is the result?

A. A NullPointerException is thrown at runtime.

B. Null
Null

C. Element 0
Element 1

D. Null element 0
Null element 1

正解: A

Oracle Java SE 8 Programmer I - 1z0-808 模擬練習