310-056 Sun - Braindumps.com.ua: question list for "Sun Certified Programmer for J2SE 5.0 Upgrade Exam", page: 7

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

#61. A programmer has an algorithm that requires a java.util.List that provides an efficient implementation of add(o, object), but does NOT need to support quick random access. What supports these requirements?

#62. Given:

 1. public interface A { 
 2. public void doSomething(String thing); 
 3. } 
 1. public class AImpl implements A 
 2. public void doSomething(String msg) { } 
 3. } 
 1. public class B { 
 2. public A doit( ) { 
 3. // more code here 
 4. } 
 5. 
 6. public String execute() { 
 7. // more code here 
 8. } 
 9. } 
 1. public class C extends B { 
 2. public AImpI doit() { 
 3. // more code here 
 4. } 
 5. 
 6. public Object execute() { 
 7. // more code here 
 8. } 
 9. }

Which statement is true about the classes and interfaces in the exhibit?

#63. A JavaBeans component has the following field:

 10. private boolean enabled;

Which two pairs of method declarations follow the JavaBeans standard for accessing this field? (Choose two.)

#64. Given:

 10. package com.sun.scjp; 
 11. public class Geodetics 
 12. public static final double DIAMETER = 12756.32; // kilometers 
 13. }

Which two correctly access the DIAMETER member of the Geodetics class? (Choose two.)

#65. Given:

 35. String #name = “Jane Doe”; 
 36. int $age = 24; 
 37. Double _height = 123.5; 
 38. double ~temp = 37.5;

Which two statements are true? (Choose two.)

#66. Given:

 10. class Line 
 11. public static class Point 9 
 12. } 
 13. 
 14. class Triangle { 
 15. // insert code here 
 16. }

Which code, inserted at line 15, creates an instance of the Point class defined in Line?

#67. Which two code fragments correctly create and initialize a static array of mt elements? (Choose two.)

#68. Given:

 10. class Line { 
 11. public class Point { public mt x,y;} 
 12. public Point getPoint() { return new Point(); 
 13. } 
 14. class Triangle { 
 15. public Triangle() { 
 16. / /insert code here 
 17. } 
 18. }

Which code. inserted at line 16, correctly retrieves a local instance of a Point object?

#69. Given:

 10. interface Foo { int bar(); } 
 11. public class Sprite { 
 12. public inttubar( Foo foo ) (return foo.bar(); } 
 13. public void testFoo() { 
 14. fubar( 
 15. //insert code here 
 16. ); 
 17. } 
 18. }

Which code, inserted at line 15, allows the class Sprite to compile?

#70. Assuming that the serializeBanana() and the deserializeBanana() methods will correctly use Java serialization and given:

 13. import java .io.*; 
 14. class Food implements Serializable {int good = 3;} 
 15. class Fruit extends Food {int juice = 5;} 
 16. public class Banana extends Fruit { 
 17. int yellow = 4; 
 18. public static void main(String [] args) { 
 19. Banana b = new Banana(); Banana b2 = new Banana(); 
 20. b.serializeBanana(b); // assume correct serialization 
 21. b2 = b.deserializeBanana(); // assume correct 
 22. System.out.println(”restore “+b2.yellow+ b2.juice+b2 good); 
 24. }  
 25. // more Banana methods go here 50.}

What is the result?

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

gen. 0.251

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Sun 310-056

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