10. class Nav{ 11. public enum Direction { NORTH, SOUTH, EAST, WEST } 12. } 13. public class Sprite{ 14. // insert code here 15. } Which code, inserted at line 14, allows the Sprite class to compile?()
public class Test { public enum Dogs {collie, harrier, shepherd}; public static void main(String [] args) { Dogs myDog = Dogs.shepherd; switch (myDog) { case collie: System.out.print(”collie “); case default: System.out.print(”retriever “); case harrier: System.out.print(”harrier “); } } } What is the result?()
public class Test { public enum Dogs {collie, harrier}; public static void main(String [] args) { Dogs myDog = Dogs.collie; switch (myDog) { case collie: System.out.print(”collie “); case harrier: System.out.print(”harrier “); } } } What is the result?()
package sun.scjp; public enum Color { RED, GREEN, BLUE } package sun.beta; // insert code here public class Beta { Color g = GREEN; public static void main( String[] argv) { System.out.println( GREEN); } } The class Beta and the enum Color are in different packages. Which two code fragments, inserted individually at line 2 of the Beta declaration, will allow this code to compile?()
enum color{red,green,yellow=5,white,black};定义了一枚举类型。编译程序为值表中各标识符分配的枚举值依次为()。
public class Ball { public enum Color { RED, GREEN, BLUE }; public void foo() { // insert code here { System.out.println(c); } } } Which code inserted at line 14 causes the foo method to print RED, GREEN, and BLUE?()
ENUM-DNS如果没有收到ENUMClient端返回的应答消息,应有重发机制,如()次重发,若重发结束后,仍没有收到应答消息应向网管告警。
假定一个枚举类型的定义为“enum RA{ab,ac,ad,ae};”,则ac值为()。
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?()
enum color{red,green,yellow=5,white,black};定义了一枚举类型。编译程序为值表中各标识符分配的枚举值依次为()。