1Z0-851 무료 덤프문제 온라인 액세스

Given:
1.interface TestA { String toString(); }
2.public class Test {
3.public static void main(String[] args) {
4.System.out.println(new TestA() {
5.public String toString() { return "test"; }
6.});
7.}
8.}
What is the result?

• A.test
• B.Compilation fails because of an error in line 4.
• C.null
• D.Compilation fails because of an error in line 5.
• E.Compilation fails because of an error in line 1.
• F.An exception is thrown at runtime.

Given:
11.String test = "a1b2c3";
12.String[] tokens = test.split("\\d");
13.for(String s: tokens) System.out.print(s + " ");
What is the result?

• A.The code runs with no output.
• B.a1 b2 c3
• C.a1b2c3
• D.Compilation fails.
• E.1 2 3
• F.a b c
• G.An exception is thrown at runtime.

Given:
10.abstract public class Employee {
11.protected abstract double getSalesAmount();
12.public double getCommision() {
13.return getSalesAmount() * 0.15;
14.}
15.}
16.class Sales extends Employee {
17.// insert method here
18.}
Which two methods, inserted independently at line 17, correctly complete the Sales class? (Choose two.)

• A.public double getSalesAmount() { return 1230.45; }
• B.private double getSalesAmount() { return 1230.45; }
• C.protected double getSalesAmount() { return 1230.45; }
• D.double getSalesAmount() { return 1230.45; }

Given:
11.public static void main(String[] args) {
12.try {
13.args = null;
14.args[0] = "test";
15.System.out.println(args[0]);
16.} catch (Exception ex) {
17.System.out.println("Exception");
18.} catch (NullPointerException npe) {
19.System.out.println("NullPointerException");
20.}
21.}
What is the result?

• A.Exception
• B.NullPointerException
• C.test
• D.Compilation fails.

Given:
10. interface Jumper { public void jump(); } ...
20. class Animal {} ...
30.class Dog extends Animal {
31.Tail tail; 32. } ...
40.class Beagle extends Dog implements Jumper{
41.public void jump() {}
42.} ...
50.class Cat implements Jumper{
51.public void jump() {}
52.}
Which three are true? (Choose three.)

• A.Cat has-a Animal
• B.Cat is-a Jumper
• C.Dog is-a Jumper
• D.Cat is-a Animal
• E.Beagle has-a Jumper
• F.Dog is-a Animal
• G.Beagle has-a Tail