【正文】 32Copyright Tarena Corporation, rights reservedA JavaBeans ponent has the following field:11. private boolean enabled。Which two pairs of method declarations follow the JavaBeans standardfor accessing this field? (Choose two.)A. public void setEnabled( boolean enabled)public boolean getEnabled()B. public void setEnabled( boolean enabled)public void isEnabled()C. public void setEnabled( boolean enabled)public boolean isEnabled()D. public boolean setEnabled( boolean enabled)public boolean getEnabled()Answer: ACQuestion 33A programmer is designing a class to encapsulate the informationabout an inventory item. A JavaBeans ponent is needed todo this. The Inventoryltem class has private instance variables to storethe item information:10. private int itemId。11. private String name。12. private String description。Which method signature follows the JavaBeans naming standards formodifying the itemld instance variable?A. itemID(int itemId)B. update(int itemId)C. setItemId(int itemId)D. mutateItemId(int itemId)E. updateItemID(int itemId)Answer: CQuestion 34Given:10. class Nav{11. public enum Direction { NORTH, SOUTH, EAST, WEST }12. }13. public class Sprite{14. // insert code hereCopyright Tarena Corporation, rights reserved15. }Which code, inserted at line 14, allows the Sprite class to pile?A. Direction d = NORTH。B. d = NORTH。C. Direction d = 。D. d = 。Answer: DQuestion 35Given:1. package 。2. public enum Color { RED, GREEN, BLUE }1. package 。2. // insert code here3. public class Beta {4. Color g = GREEN。5. public static void main( String[] argv)6. { ( GREEN)。 }7. }The class Beta and the enum Color are in different packages.Which two code fragments, inserted individually at line 2 of the Betadeclaration, will allow this code to pile? (Choose two.)A. import .*。B. import static .*。C. import 。 import static .*。D. import .*。 import static .*。E. import 。 import static 。Answer: CEQuestion 36Given:11. public class Ball {12. public enum Color { RED, GREEN, BLUE }。13. public void foo() {14. // insert code here15. { (c)。 }16. }17. }Which code inserted at line 14 causes the foo method to print RED,GREEN, and BLUE?A. for( Color c : ())B. for( Color c = RED。 c = BLUE。 c++)C. for( Color c。 () 。 ())Copyright Tarena Corporation, rights reservedD. for( Color c = Color[0]。 c = Color[2]。 c++)E. for( Color c = 。 c = 。 c++)Answer: AQuestion 37Given: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. (( Doe , John ))。21. }What is the result?A. Mr. John DoeB. 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.Answer: AQuestion 38Given:10. public class Fabric11. public enum Color {12. RED(0xff0000), GREEN(0x00ff00), BLUE(0x0000ff)。13. private final int rgb。14. Color( int rgb) { = rgb。 }15. public int getRGB() { return rgb。 }16. }。17. public static void main( String[] argv) {18. // insert code here19. }20. }Which two code fragments, inserted independently at line 18, allow theFabric class to pile? (Choose two.)A. Color skyColor = BLUE。B. Color treeColor = 。C. Color purple = new Color( 0xff00ff)。D. if( () () ) {}Copyright Tarena Corporation, rights reservedE. Color purple = + 。F. if( () () ) {}Answer: BFQuestion 39Given:11. public class Test {12. public enum Dogs {collie, harrier, shepherd}。13. public static void main(String [] args) {14. Dogs myDog = 。15. switch (myDog) {16. case collie:17. ( collie )。18. case default:19. ( retriever )。20. case harrier:21. ( harrier )。22. }23. }24. }What is the result?A. harrierB. shepherdC. retrieverD. Compilation fails.E. retriever harrierF. An exception is thrown at runtime.Answer: DQuestion 40Given:12. public class Test {13. public enum Dogs {collie, harrier}。14. public static void main(String [] args) {15. Dogs myDog = 。16. switch (myDog) {17. case collie:18. ( collie )。19. case harrier:20. ( harrier )。21. }22. }23. }What is the result?Copyright Tarena Corporation, rights reservedA. collieB. harrierC. Compilation fails.D. collie harrierE. An exception is thrown at runtime.Answer: DCopyright Tarena Corporation, rights reserved二、拖拽題： Question 1:Question 2:Copyright Tarena Corporation, rights reservedQuestion 3:Question