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多选题
14. DateFormat df;  15. Date date = new Date();  16. //insert code here  17. String s = df.format( date);  Which two,inserted independently at line 16, allow the code to compile?()
A

df= new DateFormat();

B

df= Date.getFormatter();

C

df= date.getFormatter();

D

df= date.getDateFormatter();

E

df = DateFormat.getDateInstance();

F

df= DateFormat.getInstance();


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考题 16. Date d = new Date(0L);  17. String ds = “December 15, 2004”;  18. // insert code here  What updates d‟s value with the date represented by ds?()A、 18. d = df.parse(ds);B、 18. d = df.getDate(ds);C、 18. try { 19. d = df.parse(ds);  20. } catch(ParseException e) { };D、 18. try {  19. d = df.getDate(ds);  20. } catch(ParseException e) { };

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考题 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; } }

考题 33. Date d = new Date(0);  34. String ds = “December 15, 2004”;  35. // insert code here  36. try {  37. d = df.parse(ds);  38. }  39. catch(ParseException e) {  40. System.out.println(”Unable to parse “+ ds);  41. }  42. // insert code here too  Which will create the appropriate DateFormat object and add a day to the Date object?() A、 35. DateFormat df= DateFormat.getDateFormat(); 42. d.setTime( (60 * 60 * 24) +d.getTime());B、 35. DateFormat df= DateFormat.getDateJnstance(); 42. d.setTime( (1000 * 60 * 60 * 24) + d.getTime());C、 35. DateFormat df= DateFormat.getDateFormat(); 42. d.setLocalTime( (1000*60*60*24) + d.getLocalTime());D、 35. DateFormat df= DateFormat.getDateJnstance(); 42. d.setLocalTime( (60 * 60 * 24) + d.getLocalTime());

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考题 单选题Given: 12.Date date = new Date(); 13.df.setLocale(Locale.ITALY); 14.String s = df.format(date); The variable df is an object of type DateFormat that has been initialized in line 11. What is the result if this code is run on December 14, 2000?()A The value of s is 14-dic-2000.B The value of s is Dec 14, 2000.C An exception is thrown at runtime.D Compilation fails because of an error in line 13.

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考题 多选题public class TestString3 {  public static void main(String[] args) {  // insert code here  System.out.println(s);  }  }  Which two code fragments, inserted independently at line 3, generate the output 4247?()AString s = “123456789”; s = (s-”123”).replace(1,3,”24”) - “89”;BStringBuffer s = new StringBuffer(”123456789”); s.delete(0,3).replace( 1,3, “24”).delete(4,6);CStringBuffer s = new StringBuffer(”123456789”); s.substring(3,6).delete( 1 ,3).insert(1, “24”);DStringBuilder s = new StringBuilder(”123456789”); s.substring(3,6).delete( 1 ,2).insert( 1, “24”);EStringBuilder s = new StringBuilder(”123456789”); s.delete(0,3).delete( 1 ,3).delete(2,5).insert( 1, “24”);

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考题 单选题Given a valid DateFormat object named df,and 16.Date d = new Date(0L); 17.String ds = "December 15, 2004"; 18.//insert code here What updates d’s value with the date represented by ds?()A 18. d = df.parse(ds);B 18. d = df.getDate(ds);C 18. try {19. d = df.parse(ds);20. } catch(ParseException e) { };D 18. try {19. d = df.getDate(ds);20. } catch(ParseException e) { };