JAVA DUMPS 7(SCJP)

QUESTION NO: 33

Given:

1. class Super {

2. public Integer getLenght() { return new Integer(4); }

3. }

4.

5. public class Sub extends Super {

6. public Long GetLenght() { return new Long(5); }

7.

8. public static void main(String[] args) {

9. Super sooper = new Super();

10. Sub sub = new Sub();

11. System.out.println(

12. sooper.getLenght().toString() + "," +

13. sub.getLenght().toString() );

14. }

15. }

What is the output?

A. 4,4

B. 4,5

C. 5,4

D. 5,5

E. Compilation fails.

Answer: A

QUESTION NO: 34

Given:

1. public class Test {

2. public static String output ="";

3.

4. public static void foo(int i) {

5. try {

6. if(i==1) {

7. throw new Exception();

8. }

9. output += "1";

10. }

11. catch(Exception e) {

12. output += "2";

13. return;

14. }

15. finally {

16. output += "3";

17. }

18. output += "4";

19. }

20.

21. public static void main(String args[]) {

22. foo(0);

23. foo(1);

24.

25. }

26. }

What is the value of the variable output at line 23?

Answer: 13423

QUESTION NO: 35

Given:

10. public Object m() {

11. Object o = new Float(3.14F);

12. Object [] oa = new Object[1];

13. oa[0] = o;

14. o = null;

15. return oa[0];

16. }

When is the Float object, created in line 11, eligible for garbage collection?

A. Just after line 13.

B. Just after line 14.

C. Never in this method.

D. Just after line 15 (that is, as the method returns).

Answer: B

QUESTION NO: 36

Given:

1. class Base {

2. Base() { System.out.print("Base"); }

3. }

4. public class Alpha extends Base {

5. public static void main( String[] args ) {

6. new Alpha();

7. new Base();

8. }

9. }

What is the result?

A. Base

B. BaseBase

C. Compilation fails.

D. The code runs with no output.

E. An exception is thrown at runtime.

Answer: B

QUESTION NO: 37

Given:

11. int i = 1,j = -1;

12. switch (i) {

13. case 0, 1:j = 1;

14. case 2: j = 2;

15. default; j = 0;

16. }

17. System.out.printIn("j="+j);

What is the result?

A. j = -1

B. j = 0

C. j = 1

D. j = 2

E. Compilation fails.

Answer: E

QUESTION NO: 38

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("C");

12. }

13. System.out.print("D");

14. }

15. public static void badMethod() {}

17. }

What is the result?

A. AC

B. BD

C. ACD

D. ABCD

E. Compilation fails.

Answer: C