Given: What is the result?()
A.test end B.Compilation fails. C.test runtime end D.test exception end E.A Throwable is thrown by main at runtime.
单项选择题Given that the current directory is empty, and that the user has read and write permissions, and thefollowing: Which statement is true?()
A.Compilation fails. B.The file system has a new empty directory named dir. C.The file system has a new empty directory named newDir. D.The file system has a directory named dir, containing a file f1.txt. E.The file system has a directory named newDir, containing a file f1.txt.
单项选择题Whichcapabilityexistsonlyinjava.io.FileWriter?()
A.Closing an open stream. B.Flushing an open stream. C.Writing to an open stream. D.Writing a line separator to an open stream.
单项选择题Given: What is the output?()
A.42 B.420 C.462 D.42042
单项选择题Given: 11.double input = 314159.26; 12.NumberFormat nf = NumberFormat.getInstance(Locale.ITALIAN); 13.String b; 14. insert code here Which code, inserted at line 14, sets the value of b to 314.159,26?()
A.b = nf.parse( input ); B.b = nf.format( input ); C.b = nf.equals( input ); D.b = nf.parseObject( input );
单项选择题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) { };