SCJP/OCJP IZO-851 Java Dumps - Eight

Q1. Given:
1. public abstract class Test {
2. public abstract void methodA();
3.
4. public abstract void methodB()
5. {
6. System.out.println(“Hello”);
7. }
8. }
Which two changes, independently applied, allow this code to compile? (Choose two)
A. Add a method body to methodA.
B. Replace lines 5 – 7 with a semicolon (“;”).
C. Remove the abstract qualifier from the declaration of Test.
D. Remove the abstract qualifier from the declaration of methodA.
E. Remove the abstract qualifier from the declaration of methodB.
Answer: B, E
Q2. Given:
1. public class Test {
2. public static void main(String Args[]) {
3. int i =1, j = 0;
4. switch(i) {
5. case 2: j +=6;
6. case 4: j +=1;
7. default: j +=2;
8. case 0: j +=4;
9. }
10. System.out.printIn(“j =” +j);
11. }
12. }
What is the result?
A. 0
B. 2
C. 4
D. 6
E. 9
F. 13
Answer: D
Q3. Given:
1. class A {
2. }
3. class Alpha {
4. private A myA = new A();
5.
6. void dolt( A a ) {
7. a = null;
8. }
9. void tryIt() {
10. dolt( myA );
11. }
12. }
Which two statements are correct? (Choose two)
A. There are no instanced of A that will become eligible for garbage collection.
B. Explicitly setting myA to null marks that instance to be eligible for garbage collection.
C. Any call on tryIt() causes the private instance of A to be marked for garbage
collection.
D. Private instances of A become eligible for garbage collection when instances of Alpha
become eligible for garbage collection.
Answer: B, D
Q4. Given:
1. class Super {
2. public int i = 0;
3.
4. public Super(String text) {
5. i = 1;
6. }
7. }
8.
9. public class Sub extends Super {
10. public Sub(String text) {
11. i = 2;
12. }
13.
14. public static void main(String args[]) {
15. Sub sub = new Sub(“Hello”);
16. System.out.println(sub.i);
17. }
18. }
What is the result?
A. 0
B. 1
C. 2
D. Compilation fails.
Answer: D
Q5. Given:
11. int i = 1,j = 10;
12. do{
13. if (i>j) {
14. continue;
15. }
16. j--;
17. } while (++i <6);
18. System.out.println(“i = “ +i+” and j = “+j);
What is the result?
A. i = 6 and j = 5
B. i = 5 and j = 5
C. i = 6 and j = 4
D. i = 5 and j = 6
E. i = 6 and j = 6
Answer: D
Q6.  Which fragment is an example of inappropriate use of assertions?
A. assert (!(map.contains(x)));
map.add(x);
B. if (x > 0) {
} else {
assert (x==0);
}
C. public void aMethod(int x) {
assert (x > 0);
}
D. assert (invariantCondition());
return retval;
E. switch (x) {
case 1: break;
case 2: creak;
default: assert (x == 0);
Answer: C
Q7. Given:
1. public class X {
2. public X aMethod() { return this;}
3. }
1. public class Y extends X {
2.
3. }
Which two methods can be added to the definition of class Y? (Choose two)
A. public void aMethod() {}
B. private void aMethod() {}
C. public void aMethod(String s) {}
D. private Y aMethod() { return null; }
E. public X aMethod() { return new Y(); }
Answer: C, E
Q8. Given:
1. public class X {
2. public static void main(String [] args) {
3. try {
4. badMethod();
5. System.out.print(“A”);
6. }
7. catch (Exception ex) {
8. System.out.print(“B”);
9. }
10. finally {
11. System.out.print(“B”);
12. }
13. System.out.print(“D”);
14. }
15. public static void badMethod() {
16. throw new Error();
17. }
18. }
What is the result?
A. ABCD
B. Compilation fails.
C. C is printed before exiting with an error message.
D. BC is printed before exiting with an error message.
E. BCD is printed before exiting with an error message.
Answer: C
Q9. You want subclasses in any package to have access to members of a superclass. Which is
the most restrictive access that accomplishes this objective?
A. public
B. private
C. protected
D. transient
E. default access
Answer: C