310-056 Sun - Braindumps.com.ua: question list for "Sun Certified Programmer for J2SE 5.0 Upgrade Exam", page: 5

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Sun 310-056: Sun Certified Programmer for J2SE 5.0 Upgrade Exam

#41. Given:

 1. public class Target { 
 2. private int i = 0; 
 3. public int addOne(){ 
 4. return ++i; 
 5. } 
 6. }

and:

 1. public class Client { 
 2. public static void main(String[] args){ 
 3. System.out.println(new Target().addOne()); 
 4. } 
 5. }

Which change can you make to Target without affecting Client?

#42. Given:

 11. Runnable r = new Punnable() { 
 12. public void run() 
 13. System.out.print(”Cat”); 
 14. } 
 15. }; 
 16. Thread t = new Thread(r) { 
 17. public void run() { 
 18. System.out.print(”Dog”); 
 19. } 
 20. }; 
 21. t.start();

What is the result?

#43. Given:

 1. public class Threads4 { 
 2. public static void main (String[] args) { 
 3. new Threads4.go() 
 4. } 
 5. public void go() { 
 6. Runnable r = new Runnable() { 
 7. public void run() { 
 6. System.out.print(”foo”); 
 9. } 
 10. }; 
 11. Thread t = new Thread(r); 
 12. t.start(); 
 13. t.start(); 
 14. } 
 15.}

What is the result?

#44. Given:

 1. public class TestOne { 
 2. public static void main (String[] args) throws Exception { 
 3. Thread.sleep(3000); 
 4. System .out.println(”sleep”); 
 5. } 
 6.}

What is the result?

#45. Given:

 1. public class Threads2 implements Runnable { 
 2. 
 3. public void run() { 
 4. System.out.println(”run. “); 
 5. throw new RuntimeException(”Problem”); 
 6. } 
 7. public static void main(String[] args) 
 8. Thread t = new Thread(new Threads2()); 
 9. t.start(); 
 10. System.out.println(”End of method.”); 
 11. } 
 12. }

What two can be results? (Choose two.)

#46. Click the Exhibit button.
Which statement is true about the two classes?

#47. Given:

 31. //some code here 
 32. try { 
 33. // some code here 
 34. } catch (SomeException se) { 
 35. // some code here 
 36. } finally { 
 37. // some code here 
 38. }

Under which three circumstances will the code on line 37 be executed? (Choose three.)

#48. Given:

 12. public class Test { 
 13. public enum Dogs {collie, harrier); 
 14. public static void main(String [] args) { 
 15. Dogs myDog = Dogs.collie; 
 16. switch (myDog) { 
 17. case collie: 
 16. System.out.print(”collie “); 
 19. case harrier; 
 20. System.out.print(“harrier “); 
 21. } 
 22. } 
 23.)

What is the result?

#49. Given:

 25. int x = 12; 
 26.while(x< 10){ 
 27. X--; 
 26.} 
 29. System.out.print(x);

What is the result?

#50. Given:

 10. interface Foo {} 
 11. class Alpha implements Foo {} 
 12. class Beta extends Alpha {} 
 13. class Delta extends Beta { 
 14. public static void main( String[] args ) { 
 15. Beta x = new Beta(); 
 16. //insert code here 
 17. } 
 18.}

Which code, inserted at line 16, will cause ajava.lang.ClassCastException?

[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] ... [12]

gen. 0.288

Server date 06:27 10-01-2009

Sun 310-056

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