Online Access Free 1Z0-851 Practice Test

DRAG DROP
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Correct Answer:

Given that the elements of a PriorityQueue are ordered according to natural ordering, and:
2.import java.util.*;
3.public class GetInLine {
4.public static void main(String[] args) {
5.PriorityQueue<String> pq = new PriorityQueue<String>();
6.pq.add("banana");
7.pq.add("pear");
8.pq.add("apple");
9.System.out.println(pq.poll() + " " + pq.peek());
10.}
11.}
What is the result?

• A.apple pear
• B.apple apple
• C.banana pear
• D.apple banana
• E.banana banana

Given:
1.public class Breaker2 {
2.static String o = "";
3.public static void main(String[] args) {
4.z:
5.for(int x = 2; x < 7; x++) {
6.if(x==3) continue;
7.if(x==5) break z;
8.o = o + x;
9.}
10.System.out.println(o);
11.}
12.}
What is the result?

• A.Compilation fails.
• B.2346
• C.2
• D.24
• E.234
• F.246

Given:
11.public class ItemTest {
12.private final int id;
13.public ItemTest(int id) { this.id = id; }
14.public void updateId(int newId) { id = newId; }
15.16.
public static void main(String[] args) {
17.ItemTest fa = new ItemTest(42);
18.fa.updateId(69);
19.System.out.println(fa.id);
20.}
21.}
What is the result?

• A.The attribute id in the ItemTest object is modified to the new value.
• B.Compilation fails.
• C.An exception is thrown at runtime.
• D.The attribute id in the ItemTest object remains unchanged.
• E.A new ItemTest object is created with the preferred value in the id attribute.

Given:
13.public class Pass {
14.public static void main(String [] args) {
15.int x = 5;
16.Pass p = new Pass();
17.p.doStuff(x);
18.System.out.print(" main x = " + x);
19.}
20.21.
void doStuff(int x) {
22.System.out.print(" doStuff x = " + x++);
23.}
24.}
What is the result?

• A.Compilation fails.
• B.An exception is thrown at runtime.
• C.doStuff x = 5 main x = 6
• D.doStuff x = 6 main x = 6
• E.doStuff x = 5 main x = 5
• F.doStuff x = 6 main x = 5