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Click the Exhibit button. 3. public void method(int x) {




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  1. At a chemical exhibition
  2. CLICK HERE TO SIGN UP
  3. Click the Exhibit button.
  4. Click the Exhibit button.
  5. Click the Exhibit button.
  6. Click the Exhibit button.
  7. Click the Exhibit button.
  8. Fairs and exhibitions
  9. Sub CommandButton1_Click()

1. public class Test {

2. int x= 12;

3. public void method(int x) {

4. x+=x;

5. System.out.println(x);

6. }

7. }

Given:

34. Test t = new Test();

35. t.method(5);

What is the output from line 5 of the Test class?

A. 5

B. 10

C. 12

D. 17

E. 24

36. Given:

55. int []x= {1, 2,3,4, 5};

56. int y[] =x;

57. System.out.println(y[2]);

Which is true?

A. Line 57 will print the value 2.

B. Line 57 will print the value 3.

C. Compilation will fail because of an error in line 55.

D. Compilation will fail because of an error in line 56.

 

37. Given:

35. String #name = "Jane Doe";

36. int$age=24;

37. Double_height = 123.5;

38. double~temp = 37.5;

Which two are true? (Choose two.)

A. Line 35 will not compile.

B. Line 36 will not compile.

C. Line 37 will not compile.

D. Line 38 will not compile.

 

38. Which two code fragments correctly create and initialize a static array of int elements? (Choose two.)

A. static final int[] a = { 100,200 };

B. static final int[] a;

static { a=new int[2]; a[0]=100; a[1]=200; }

C. static final int[] a = new int[2] { 100,200 };

D. static final int[] a;

static void init() {

a = new int[3]; a[0]=100; a[1]=200;

}

 

 

39. Given:

11. public class Ball {

12. public enum Color { RED, GREEN, BLUE };

13. public void foo() {

14. // insert code here

15. { System.out.println(c); }

16. }

17. }

Which code inserted at line 14 causes the foo method to print RED, GREEN, and BLUE?

A. for( Color c : Color.values())

B. for( Color c = RED; c <= BLUE; c++)

C. for( Color c; c.hasNext() ; c.next())

D. for( Color c = Color[0]; c <= Color[2]; c++)

E. for( Color c = Color.RED; c <= Color.BLUE; c++)

40. Given:

10. public class Fabric

11. public enum Color {

12. RED(0xff0000), GREEN(0x00ff00), BLUE(0x0000ff);

13. private final int rgb;

14. Color( int rgb) { this.rgb = rgb; }

15. public int getRGB() { return rgb; }

16. };

17. public static void main( String[] argv) {

18. // insert code here

19. }

20. }

Which two code fragments, inserted independently at line 18, allow the Fabric class to compile? (Choose two.)



A. Color skyColor = BLUE;

B. Color treeColor = Color.GREEN;

C. Color purple = new Color( 0xff00ff);

D. if( RED.getRGB() < BLUE.getRGB() ) {}

E. Color purple = Color.BLUE + Color.RED;

F. if( Color.RED.ordinal() < Color.BLUE.ordinal() ) {}

 

 

41. Given:

11. public enum Title {

12. MR("Mr."), MRS("Mrs."), MS("Ms.");

13. private final String title;

14. private Title(String t) { title = t; }

15. public String format(String last, String first) {

16. return title + " " + first + " " + last;

17. }

18. }

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

20. System.out.println(Title.MR.format("Doe", "John"));

21. }

What is the result?

A. Mr. John Doe

B. An exception is thrown at runtime.

C. Compilation fails because of an error in line 12.

D. Compilation fails because of an error in line 15. E. Compilation fails because of an error in line 20.

42. Given:

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

12. Object obj =new int[] { 1,2,3 };

13. int[] someArray = (int[])obj;

14. for (int i: someArray) System.out.print(i +" ")



15. }

What is the result?

A. 1 2 3

B. Compilation fails because of an error in line 12.

C. Compilation fails because of an error in line 13.

D. Compilation fails because of an error in line 14.

E. A ClassCastException is thrown at runtime.

43. Given:

10. class Foo {

11. static void alpha() { /* more code here */ }

12. void beta() { /* more code here */ }

13. }

Which two are true? (Choose two.)

A. Foo.beta() is a valid invocation of beta().

B. Foo.alpha() is a valid invocation of alpha().

C. Method beta() can directly call method alpha().

D. Method alpha() can directly call method beta().

 

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:

logIt("log message 1 ");

logIt("log message2","log message3");

logIt("log message4", "log message5", "log message6);

Which declaration satisfies this requirement?

A. public void logIt(String * msgs)

B. public void logIt(String [] msgs)

C. public void logIt(String... msgs)

D. public void logIt(String msg1, String msg2, String msg3)

 

45. A programmer is designing a class to encapsulate the information about an inventory item. A JavaBeans component is needed to do this. The Inventoryltem class has private instance variables to store the item information:

10. private int itemId;

11. private String name;

12. private String description;

Which method signature follows the JavaBeans naming standards for modifying the itemld instance variable?



A. itemID(int itemId) B. update(int itemId)

C. setItemId(int itemId) D. mutateItemId(int itemId)

E. updateItemID(int itemId)


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