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.
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Given:
What is the output?（）
A.42
B.420
C.462
D.42042
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 ）；
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） { }；
Assuming that the serializeBanana（） and the deserializeBanana（） methods will correctly use Javaserialization and given：
What is the result？（）
A.restore 400
B.restore 403
C.restore 453
D.Compilation fails.
E.An exception is thrown at runtime.
Given：
What is the result？（）
A.Canada
B.null Canada
C.Canada null
D.Canada Canada
E.Compilation fails due to an error on line 26.
A team of programmers is reviewing a proposed API for a new utility class. After some discussion， theyrealize that they can reduce the number of methods in the API without losing any functionality.
If theyimplement the new design，which two OO principles will they be promoting？（）
A.Looser coupling
B.Tighter coupling
C.Lower cohesion
D.Higher cohesion
E.Weaker encapsulation
Given：
Which is true？（）
A.If line 10 is removed， the compilation succeeds.
B.If line 11 is removed， the compilation succeeds.
C.If line 12 is removed， the compilation succeeds.
D.If line 13 is removed， the compilation succeeds.
E.More than one line must be removed for compilation to succeed.
Given：
What is the result？（）
A.0，0，0
B.150，60，0
C.Compilation fails.
D.150，150，150
Given：
1.package test；
2.
3.class Target {
4.public String name = "hello"；5.}
What can directly access and change the value of the variable name？（）
A.any class
B.only the Target class
C.any class in the test package
D.any class that extends Target
A.class Man extends Dog { }
B.class Man implements Dog { }
C.class Man { private BestFriend dog； }
D.class Man { private Dog bestFriend； }
E.class Man { private Dog
F.class Man { private BestFriend
最新试题
Given：Which code fragment， inserted at the end of line 12， produces the output p is 420？（）
A team of programmers is involved in reviewing a proposed design for a new utility class. After some discussion， they realize that the current design allows other classes to access methods in the utility class that should be accessible only to methods within the utility class itself.What design issue has the team discovered？（）
Given：What is the result？（）
Given：What is the result？（）
Given：What is the result？（）
Given：What is the result？（）
Given：What are four valid examples of polymorphic method calls？（）
Click the Exhibit button.Which graph represents the correct directory structure for a JAR file from which those classes can be used by the compiler and JVM？（）
Given：What is the result？（）
Given：Which line of code marks the earliest point that an object referenced by intObj becomes a candidate for garbage collection？（）