1z0-809試験無料問題集（195題）「Oracle Java SE 8 Programmer II 認定」

出題：1

Given the code fragments:

and

What is the result?

A. null

B. DogCatMouse

C. A compilation error occurs.

D. [Dog, Cat, Mouse]

正解：D 解答を投票する

出題：2

Given:
public final class IceCream {
public void prepare() {}
}
public class Cake {
public final void bake(int min, int temp) {}
public void mix() {}
}
public class Shop {
private Cake c = new Cake ();
private final double discount = 0.25;
public void makeReady () { c.bake(10, 120); }
}
public class Bread extends Cake {
public void bake(int minutes, int temperature) {}
public void addToppings() {}
}
Which statement is true?

A. A compilation error occurs in Shop.

B. All classes compile successfully.

C. A compilation error occurs in Cake.

D. A compilation error occurs in IceCream.

E. A compilation error occurs in Bread

正解：E 解答を投票する

出題：3

Which code fragment is required to load a JDBC 3.0 driver?

A. DriverManager.loadDriver ("org.xyzdata.jdbc.NetworkDriver");

B. Class.forName("org.xyzdata.jdbc.NetworkDriver");

C. Connection con = Connection.getDriver("jdbc:xyzdata://localhost:3306/EmployeeDB");

D. Connection con = DriverManager.getConnection("jdbc:xyzdata://localhost:3306/EmployeeDB");

正解：B 解答を投票する

出題：4

Given the code fragments:

and

What is the result?

A. FranceNot Found

B. Optional[France]Not Found

C. Optional [France]Optional [NotFound]

D. FranceOptional[NotFound]

正解：A 解答を投票する

出題：5

Given:

and the code fragment:

What is the result?

A. A compilation error occurs at line n1.

B. A compilation error occurs because the try block doesn't have a catch or finally block.

C. A compilation error occurs at line n2.

D. The program compiles successfully.

正解：B 解答を投票する

出題：6

Given the code fragment:

Assume that the value of now is 6:30 in the morning.
What is the result?

A. 1

B. 60

C. 0

D. An exception is thrown at run time.

正解：B 解答を投票する

出題：7

Given:

and the code fragment:

Which definition of the ColorSorter class sorts the blocks list?

A. Option D

B. Option C

C. Option A

D. Option B

正解：B 解答を投票する

出題：8

Given the code fragment:
String str = "Java is a programming language";
ToIntFunction<String> indexVal = str: : indexOf; //line n1
int x = indexVal.applyAsInt("Java");//line n2
System.out.println(x);
What is the result?

A. A compilation error occurs at line n1.

B. 1

C. 0

D. A compilation error occurs at line n2.

正解：C 解答を投票する

出題：9

Given the code fragment:
LocalDate valentinesDay =LocalDate.of(2015, Month.FEBRUARY, 14);
LocalDate next15days = valentinesDay.plusDays (15);
LocalDate nextYear = next15days.plusYears(1); // line n1
System.out.println(nextYear);
What is the result?

A. A compilation error occurs at line n1.

B. 2016-03-01

C. A DateTimeException is thrown.

D. 2016-02-29

正解：A 解答を投票する

出題：10

Given the code fragments:
class MyThread implements Runnable {
private static AtomicInteger count = new AtomicInteger (0);
public void run () {
int x = count.incrementAndGet();
System.out.print (x+" ");
}
}
and
Thread thread1 = new Thread(new MyThread());
Thread thread2 = new Thread(new MyThread());
Thread thread3 = new Thread(new MyThread());
Thread [] ta = {thread1, thread2, thread3};
for (int x= 0; x < 3; x++) {
ta[x].start();
}
Which statement is true?

A. The program prints 1 2 3 and the order is unpredictable.

B. A compilation error occurs.

C. The program prints 1 2 3.

D. The program prints 1 1 1.

正解：A 解答を投票する

1z0-809試験無料問題集「Oracle Java SE 8 Programmer II 認定」