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Total No Of Questions: 100.
1) Which four statements are true? (Choose four.)


2) Given:
import java.util.*;
class Test {
public static void main(String[] args) {
// insert code here
x.add("one");
x.add("two");
x.add("TWO");
System.out.println(x.poll());
}
}
Which, inserted at // insert code here, will compile? (Choose all that apply.)



3) Given:
class Fizz {
int x = 5;
public static void main(String[] args) {
final Fizz f1 = new Fizz();
Fizz f2 = new Fizz();
Fizz f3 = FizzSwitch(f1,f2);
System.out.println((f1 == f3) + " " + (f1.x == f3.x));
}
static Fizz FizzSwitch(Fizz x, Fizz y) {
final Fizz z = x;
z.x = 6;
return z;
} }
What is the result?



4) Click the Exhibit button.
1. public class GoTest {
2. public static void main(String[] args) {
3. Sente a = new Sente(); a.go();
4. Goban b = new Goban(); b.go();
5. Stone c = new Stone(); c.go();
6. }
7. }
8.
9. class Sente implements Go {
10. public void go() { System.out.println(”go in Sente.”); }
11. }
12.
13. class Goban extends Sente {
14. public void go() { System.out.println(”go in Goban”); }
15. }
16.
17. class Stone extends Goban implements Go { }
18.
19. interface Go { public void go(); }
What is the result?



5) Given:
import java.util.*;
public class Group extends HashSet<Person> {
public static void main(String[] args) {
Group g = new Group();
g.add(new Person("Hans"));
g.add(new Person("Lotte"));
g.add(new Person("Jane"));
g.add(new Person("Hans"));
g.add(new Person("Jane"));
System.out.println("Total: " + g.size());
}
public boolean add(Object o) {
System.out.println("Adding: " + o);
return super.add(o);
}
}
class Person {
private final String name;
public Person(String name) { this.name = name; }
public String toString() { return name; }
}
Which of the following occur at least once when the code is compiled and run?
(Choose all that apply.)



6) Given:
11. List list = // more code here
12. Collections.sort(list, new MyComparator());
Which code will sort this list in the opposite order of the sort in line 12?



7) Given:
11. public class Commander {
12. public static void main(String[] args) {
13. String myProp = /* insert code here */
14. System.out.println(myProp);
15. }
16. }
and the command line:
java -Dprop.custom=gobstopper Commander
Which two, placed on line 13, will produce the output gobstopper? (Choose two.)



8) Given:
class Knowing {
static final long tooth = 343L;
static long doIt(long tooth) {
System.out.print(++tooth + " ");
return ++tooth;
}
public static void main(String[] args) {
System.out.print(tooth + " ");
final long tooth = 340L;
new Knowing().doIt(tooth);
System.out.println(tooth);
} }
What is the result?


9) Given:
1. class Bigger {
2. public static void main(String[] args) {
3. // insert code here
4. }
5. }
6. class Better {
7. enum Faster {Higher, Longer};
8. }
Which, inserted independently at line 3, will compile? (Choose all that apply.)



10) Given:
class Sixties {
public static void main(String[] args) {
int x = 5;
int y = 7;
System.out.print(((y * 2) % x));
System.out.print(" " + (y % x));
}
}
What is the result?

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