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Java Standard Edition 5 Programmer Certified Professional Exam
Question No: 61 – (Topic 1)
Given:
11. Float pi = new Float(3.14f);
12. if (pi gt; 3) {
13. System.out.print(quot;pi is bigger than 3. quot;);
14. }
-
else {
-
System.out.print(quot;pi is not bigger than 3. quot;);
17. }
-
finally {
-
System.out.println(quot;Have a nice day.quot;);
20. }
What is the result?
-
pi is not bigger than 3. Have a nice day.
-
pi is bigger than 3. Have a nice day.
-
pi is bigger than 3.
-
Compilation fails.
-
An exception occurs at runtime.
Answer: D
Question No: 62 – (Topic 1)
Given:
-
public static void append(List list) { list.add(quot;0042quot;); }
-
public static void main(String[] args) {
-
Listlt;Integergt; intList = new ArrayListlt;Integergt;();
-
append(intList);
-
System.out.println(intList.get(0));
16. }
What is the result?
-
An exception is thrown at runtime.
-
Compilation fails because of an error in line 14.
-
Compilation fails because of an error in line 13.
D. 0042
E. 42
Answer: D
Question No: 63 – (Topic 1)
Given:
10. interface Jumper { public void jump(); }
…
20. class Animal {}
…
-
class Dog extends Animal {
-
Tail tail;
32. }
…
-
class Beagle extends Dog implements Jumper{
-
public void jump() {}
42. }
…
-
class Cat implements Jumper{
-
public void jump() {}
52. }
Which three are true? (Choose three.)
-
Dog is-a Jumper
-
Beagle has-a Jumper
-
Cat has-a Animal
-
Dog is-a Animal
-
Cat is-a Jumper
-
Beagle has-a Tail
-
Cat is-a Animal
Answer: D,E,F
Question No: 64 – (Topic 1)
Given:
12. public class Yippee2 { 13.
-
static public void main(String [] yahoo) {
-
for(int x = 1; x lt; yahoo.length; x ) {
-
System.out.print(yahoo[x] quot; quot;);
17. }
18. }
19. }
and the command line invocation: java Yippee2 a b c
What is the result?
-
a b c
-
Compilation fails.
-
a b
-
An exception is thrown at runtime.
-
b c
Answer: E
Question No: 65 DRAG DROP – (Topic 1)
Click the Task button.
Answer:
Question No: 66 – (Topic 1)
A programmer needs to create a logging method that can accept an arbitrary number of arguments. For example, it may be called in these ways:
logIt(quot;log message1quot;);
logIt(quot;log message2quot;,quot;log message3quot;);
logIt(quot;log message4quot;,quot;log message5quot;,quot;log message6quot;); Which declaration satisfies this requirement?
-
public void logIt(String msg1, String msg2, String msg3)
-
public void logIt(String [] msgs)
-
public void logIt(String * msgs)
-
public void logIt(String… msgs)
Answer: D
Question No: 67 DRAG DROP – (Topic 1)
Click the Task button.
Answer:
Question No: 68 – (Topic 1)
Given:
-
import java.util.*;
-
public class PQ {
-
public static void main(String[] args) {
-
PriorityQueuelt;Stringgt; pq = new PriorityQueuelt;Stringgt;();
-
pq.add(quot;carrotquot;);
-
pq.add(quot;applequot;);
-
pq.add(quot;bananaquot;);
-
System.out.println(pq.poll() quot;:quot; pq.peek());
9. }
10. }
What is the result?
-
apple:apple
-
banana:apple
-
carrot:apple
-
apple:banana
-
carrot:banana
-
carrot:carrot
Answer: D
Question No: 69 – (Topic 1)
Given:
-
public class Threads3 implements Runnable {
-
public void run() {
-
System.out.print(quot;runningquot;); 4. }
-
-
-
-
public static void main(String[] args) {
-
Thread t = new Thread(new Threads3());
-
t.run();
-
t.run();
-
t.start();
10. }
11. }
What is the result?
-
Compilation fails.
-
The code executes and prints quot;runningrunningquot;.
-
The code executes and prints quot;runningrunningrunningquot;.
-
The code executes and prints quot;runningquot;.
-
An exception is thrown at runtime.
-
Answer: C
Question No: 70 – (Topic 1)
Given:
int[] myArray = new int[] {1, 2, 3, 4, 5};
What allows you to create a list from this array?
-
List myList = Arrays.asList(myArray);
-
List myList = Collections.fromArray(myArray);
-
List myList = new ArrayList(myArray);
-
List myList = myArray.asList();
Answer: A
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