Quiz of the Day | OCPJP (35)

Given:

7. public interface Ndesit {
8. /* insert code here */ int score = 8;
9. }

Which 3 are valid on line 8? (Choose 3)
A. final
B. static
C. native
D. public
E. private
F. abstract
G. protected

Quiz of the day | OCPJP (34)

Given:

3. class K {
4. String name = "kentang ";
5. String makeNoise() { return "ngentang"; }
6. }
7. class S extends K {
8. String name = "surikoyo ";
9. String makeNoise() { return "nyurikoyo"; }
10. }
11. public class ZK {
12. public static void main(String[] args) { new ZK().go(); }
13. void go() {
14. K k = new S();
15. System.out.println(k.name + k.makeNoise());
16. }
17. }

What is the result?

A. kentang nyurikoyo
B. surikoyo nyurikoyo
C. kentang ngentang
D. surikoyo ngentang
E. Compilation fails
F. An exception is thrown at runtime

Quiz of the day | OCPJP (33)

Given:

1. public class Tingting implements Ayu
{ public void doIt() { } }
2.
3. abstract class Phone1 extends Electronic { }
4.
5. abstract class Phone2 extends Electronic
{ public void doIt(int x) { } }
6.
7. class Phone3 extends Electronic implements Ayu
{ public void doStuff() { } }
8.
9. interface Device { public void doIt(); }

What is the result? (Choose all that apply.)

A. Compilation succeeds
B. Compilation fails with an error on line 1
C. Compilation fails with an error on line 3
D. Compilation fails with an error on line 5
E. Compilation fails with an error on line 7
F. Compilation fails with an error on line 9

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Quiz of the day | OCPJP (32)

Given:

1. class Pocong {
2. public static void main(String[] args) {
3. doStuff(8);
4. doStuff(8,9);
5. }
6. // insert code here
7. }

Which, inserted independently at line 6, will compile? (Choose all that

apply.)

A. static void doStuff(int... doArgs) { }
B. static void doStuff(int[] doArgs) { }
C. static void doStuff(int doArgs...) { }
D. static void doStuff(int... doArgs, int y) { }
E. static void doStuff(int x, int... doArgs) { }


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Quiz of the day | OCPJP (31)

Which method names follow the JavaBeans standard? (Choose all that apply.)

A. addBook
B. getProduct
C. deleteShirt
D. isThree
E. putBall


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Quiz of the day | OCPJP (30)

Given:

4. class WongJowo {
5. public static void main(String[] args) {
6. for(int __w = 0; __w < 5; __w++) ;
7. int #jw = 8;
8. long [] x [2];
9. Boolean []wj[];
10. enum Lanang { NGGANTENG, GAGAH, PINTER };
11. }
12. }

What is the result? (Choose all that apply.)

A. Compilation succeeds
B. Compilation fails with an error on line 6
C. Compilation fails with an error on line 7
D. Compilation fails with an error on line 8
E. Compilation fails with an error on line 9
F. Compilation fails with an error on line 10


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Quiz of the day | OCPJP (29)

Given:

3. public class Bunga {
4. public enum Kembang { MAWAR, SETAMAN, DESA };
5. public static void main(String[] args) {
6. for(Kembang k : Kembang.values() )
7. ;
8. Kembang [] k2 = Kembang.values();
9. System.out.println(k2[2]);
10. }
11. }

What is the result? (Choose all that apply.)

A. SETAMAN
B. DESA
C. The output is unpredictable
D. Compilation fails due to an error on line 4
E. Compilation fails due to an error on line 6
F. Compilation fails due to an error on line 8
G. Compilation fails due to an error on line 9


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Quiz of the day | OCPJP (28)

Given:

4. public class Kancil extends Kijang {
5. public static void main(String[] args) {
6. Short sikil = 4;
7. System.out.println(jumlah(sikil, 4));
8. }
9. }
10. class Kijang {http://www.blogger.com/img/blank.gif
11. int jumlah(int x, int y) { return x + y; }
12. }

What is the result?

A. 8
B. Compilation fails due to multiple errors
C. Compilation fails due to an error on line 6
D. Compilation fails due to an error on line 7
E. Compilation fails due to an error on line 11

Quiz of the day | OCPJP (27)

Given two files:

1. package x;
2. public class J {
3. int a = 1;
4. protected int b = 2;
5. public int c = 3;
6. }

3. package y;
4. import x.*;
5. public class H {
6. public static void main(String[] args) {
7. J j = new J();
8. System.out.print(" " + j.a);
9. System.out.print(" " + j.b);
10. System.out.print(" " + j.c);
11. }
12. }

http://www.blogger.com/img/blank.gif
What is the result? (Choose all that apply.)

A. 1 2 3
B. 1 followed by an exception
C. Compilation fails with an error on line 7
D. Compilation fails with an error on line 8
E. Compilation fails with an error on line 9
F. Compilation fails with an error on line 10


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Quiz of the day | OCPJP (26)

Given:

1. enum Kewan {
2. KIRIK("guk"), KUCING("meong"), WEDUS("mbek");
3. String suoro;
4. Kewan(String s) { suoro = s; }
5. }
6. class Enum {
7. static Kewan a;
8. public static void main(String [] args) {
9. System.out.println(a.KIRIK.suoro + " " + a.WEDUS.suoro);
10. }
11. }

What is the result?

A. guk mbek
B. Multiple compilation errors
C. Compilation fails due to an error on line 2
D. Compilation fails due to an error on line 3
E. Compilation fails due to an error on line 4
F. Compilation fails due to an error on line 9


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Quiz of the day | OCPJP (22)