单项选择题
Which code fragment, inserted at line 23, allows the code to compile?()
A.df = new DateFormat();
B.df = Date.getFormat();
C.df = date.getFormat();
D.df = DateFormat.getFormat();
E.df = DateFormat.getInstance();
相关考题
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单项选择题
Given: 1.d is a valid, non-null Date object 2.df is a valid, non-null DateFormat object set to the current locale What outputs the current locale’s country name and the appropriate version of d’s date?()
A.Locale loc = Locale.getLocale(); System.out.println(loc.getDisplayCountry()+ " " + df.format(d));
B.Locale loc = Locale.getDefault(); System.out.println(loc.getDisplayCountry()+ " " + df.format(d));
C.Locale loc = Locale.getLocale();System.out.println(loc.getDisplayCountry()+ " " + df.setDateFormat(d));
D. Locale loc = Locale.getDefault();System.out.println(loc.getDisplayCountry()+ " " + df.setDateFormat(d)); -
多项选择题
Which two code fragments, inserted independently at line 3, generate the output 4247?()
A. String s = "123456789"; s = (s - "123").replace(1, 3, "24") - "89";
B. StringBuffer s = new StringBuffer("123456789");s.delete(0, 3).replace(1, 3, "24").delete(4, 6);
C. StringBuffer s = new StringBuffer("123456789"); s.substring(3, 6).delete(1,3).insert(1, "24");
D. StringBuilder s = new StringBuilder("123456789");s.substring(3, 6).delete(1, 2).insert(1, "24");
E. StringBuilder s = new StringBuilder("123456789"); s.delete(0, 3).delete(1, 3).delete(2, 5).insert(1, "24"); -
单项选择题
What is the result?()
A.three
B.other
C.An exception is thrown at runtime.
D.Compilation fails because of an error on line 12.
E.Compilation fails because of an error on line 13.
F.Compilation fails because of an error on line 15.
