Given:Which code, inserted at line 4, ...

单项选择题 Given:

Which code, inserted at line 4, guarantees that this program will output [1, 2]（）?

A.Set set = new TreeSet();
B.Set set = new HashSet();
C.Set set = new SortedSet();
D.List set = new SortedList();
E.Set set = new LinkedHashSet();

点击查看答案

您可能感兴趣的试卷

你可能感兴趣的试题

1.多项选择题Given a class whose instances, when found in a collection of objects, are sorted by using the compareTo()method, which two statements are true?（）

A.The class implements java.lang.Comparable.
B.The class implements java.util.Comparator.
C.The interface used to implement sorting allows this class to define only one sort sequence.
D.The interface used to implement sorting allows this class to define many different sort sequences.

点击查看答案

2.单项选择题 Given:

What is the result?（）

A.0
B.1
C.2
D.3
E.4
F.Compilation fails.
G.An exception is thrown at runtime.

点击查看答案

3.单项选择题 Given:

What is the result?（）

A.7
B.49
C.343
D.Compilation fails.
E.An exception is thrown at runtime.

点击查看答案

4.单项选择题 Given:

What is the result when the programmer attempts to compile the code and run it with the command java Converter 12?（）

A. It is true that j==i.
B. It is false that j==i.
C. An exception is thrown at runtime.
D. Compilation fails because of an error in line 13.

点击查看答案

5.单项选择题 Given:

What is the result?（）

A.abc
B.123
C.a1b2c3
D.a1
E.Compilation fails.
F.The code runs with no output.
G.An exception is thrown at runtime

点击查看答案

6.多项选择题 Given:

Which two statements are true about the result if the default locale is Locale.US?（）

A.The value of b is 2.
B.The value of a is 3.14.
C.The value of b is 2.00.
D.The value of a is 3.141.
E.The value of a is 3.1415.
F.The value of a is 3.1416.
G.The value of b is 2.0000.

点击查看答案

7.单项选择题 Given:

What is the result?（）

A.2
B.3
C.4
D.6
E.7

点击查看答案

8.单项选择题 Given:

What is the result?（）

A.Compilation succeeds.
B.Exactly one class does NOT compile.
C.Exactly two classes do NOT compile.
D.Exactly four classes do NOT compile.
E.Exactly three classes do NOT compile.

点击查看答案

9.单项选择题 Click the Exhibit button. Which statement is true about the classes and interfaces in the exhibit?（）

A.Compilation will succeed for all classes and interfaces.
B.Compilation of class C will fail because of an error in line 2.
C.Compilation of class C will fail because of an error in line 6.
D.Compilation of class AImpl will fail because of an error in line 2

点击查看答案

10.多项选择题 Given:

Which three methods, inserted individually at line 14, will correctly complete class Two?（）

A.int foo() { /* more code here */ }
B.void foo() { /* more code here */ }
C.public void foo() { /* more code here */ }
D.private void foo() { /* more code here */ }
E.protected void foo() { /* more code here */ }

点击查看答案