- •1. Given:
- •2. Which two statements are true? (Choose two.)
- •3. Given:
- •4. Given:
- •5. Given:
- •6. Given:
- •10. Given:
- •11. Given:
- •13. Given:
- •14. Given:
- •15. Given:
- •16. Given:
- •17. Assume that country is set for each class. Given:
- •12. Given:
- •18. Which Man class properly represents the relationship "Man has a best friend who is a Dog"?
- •19. Given:
- •20. Given :
- •21. Given:
- •22. Given:
- •23. Given:
- •24. Click the Exhibit button.
- •25. Given:
- •30. Given:
- •31. Given:
- •32. Which two classes correctly implement both the java.Lang.Runnable and the java.Lang.Clonable interfaces? (Choose two.)
- •33. Click the Exhibit button.
- •2. Public static void main(String[] args) {
- •34. Given:
- •20. Public static void main(String[] args) {
- •35. Click the Exhibit button.
- •36. Given:
- •37. Given:
- •38. Which two code fragments correctly create and initialize a static array of int elements? (Choose two.)
- •39. Given:
- •40. Given:
- •44. A programmer needs to create a logging method that can accept an arbitrary number of arguments. For example, it may be called in these ways:
- •46. Click the Exhibit button.
- •47. A JavaBeans component has the following field:
- •48. Given:
- •49. Given:
- •50. Click the Exhibit button.
- •51. Click the Exhibit button.
- •52. Given:
- •53. Given:
- •54. Given:
- •55. Given:
- •56. Click the Exhibit button.
- •22. Public static void main(String[] args) {
- •57. Given:
- •58. Click the Exhibit button.
- •31. Public static void main(String[] args) {
- •59. Given:
- •60. Given:
- •61. Given:
- •11. Public static void main(String[] args) {
- •62. Given:
- •11. Public static void main(String[] args) {
- •63. Given:
- •67. Give:
- •72. Click the Exhibit button.
- •73. Click the Exhibit button.
- •74. Given:
- •75. Click the Exhibit button.
- •76. Click the Exhibit button.
- •77. Given:
- •78. Given:
- •19. Public static void main(String[] args) {
- •79. Which two code fragments will execute the method doStuff() in a separate thread?
- •83. Click the Exhibit button.
- •84. Click the Exhibit button.
- •89. Given a method that must ensue that its parameter is not null:
- •90. Click the Exhibit button.
- •96. Given this method in a class:
- •97. Given:
- •98. Given:
- •99. Given:
- •2. Public static void main(String[] args) {
- •100. Given:
- •101. Given:
- •102. Given:
- •11. Public static void main(String[] args) {
- •103. When comparing java.Io.BufferedWriter to java.Io.FileWriter, which capability exists as a method in only one of the two?
- •104. Given:
- •105. Click the Exhibit button.
- •106.Which three concerning the use of the java.Io.Serializable interface are true?
- •108. Assuming that the serializeBanana2() and the deserializeBanana2() methods will correctly use Java serialization and given:
- •109. Given:
- •11. Private int X;
- •110. Given:
- •111. Given:
- •112. Given:
- •113. Given:
- •114. Given:
- •115. Given a valid DateFormat object named df, and
18. Which Man class properly represents the relationship "Man has a best friend who is a Dog"?
A. class Man extends Dog { }
B. class Man implements Dog { }
C. class Man { private BestFriend dog; }
D. class Man { private Dog bestFriend; }
E. class Man { private Dog<bestFriend> }
F. class Man { private BestFriend<dog> }
19. Given:
11. public class Person {
12. private name;
13. public Person(String name) {
14. this.name = name;
15. }
16. public int hashCode() {
17. return 420;
18. }
19. }
Which is true?
A. The time to find the value from HashMap with a Person key depends on the size of the map.
B. Deleting a Person key from a HashMap will delete all map entries for all keys of type Person.
C. Inserting a second Person object into a HashSet will cause the first Person object to be removed as a duplicate.
D. The time to determine whether a Person object is contained in a HashSet is constant and does NOT depend on the size of the map.
20. Given :
23. Object [] myObjects = {
24. new integer(12),
25. new String("foo"),
26. new integer(5),
27. new Boolean(true)
28. };
29. Arrays.sort(myObjects);
30. for( int i=0; i<myObjects.length; i++) {
31. System.out.print(myObjects[i].toString());
32. System.out.print(" ");
33. }
What is the result?
A. Compilation fails due to an error in line 23.
B. Compilation fails due to an error in line 29.
C. A ClassCastException occurs in line 29.
D. A ClassCastException occurs in line 31.
E. The value of all four objects prints in natural order.
21. Given:
13. public class Pass {
14. public static void main(String [1 args) {
15. int x 5;
16. Pass p = new Pass();
17. p.doStuff(x);
18. System.out.print(" main x = "+ x);
19. }
20.
21. void doStuff(int x) {
22. System.out.print(" doStuff x = "+ x++);
23. }
24. }
What is the result?
A. Compilation fails.
B. An exception is thrown at runtime.
C. doStuffx = 6 main x = 6
D. doStuffx = 5 main x = 5
E. doStuffx = 5 main x = 6
F. doStuffx = 6 main x = 5
22. 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.)
A. import com.sun.scjp.Geodetics;
public class TerraCarta {
public double halfway() {
return Geodetics.DIAMETER/2.0;
}
}
B. import static com.sun.scjp.Geodetics;
public class TerraCarta {
public double halfway() {
return DIAMETER/2.0;
}
}
C. import static com.sun.scjp.Geodetics. *;
public class TerraCarta {
public double halfway() {
return DIAMETER/2.0;
}
}
D. package com.sun.scjp;
public class TerraCarta {
public double halfway() {
return DIAMETER/2.0;
}
}
23. Given:
10. interface Foo { int bar(); }
11. public class Sprite {
12. public int fubar( 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?
A. Foo { public int bar() { return 1; } }
B. new Foo { public int bar() { return 1; } }
C. newFoo() { public int bar(){return 1; } }
D. new class Foo { public int bar() { return 1; } }