单项选择题

A. no outputB. no output assert is onC. assert is onD. ……

Given:

If class Donkey is invoked twice, the first time without assertions enabled, and the second time with assertions enabled, what are the results?（）

A. no output
B. no output assert is on
C. assert is on
D. no output An AssertionError is thrown.
E. assert is on An AssertionError is thrown

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热门试题

单项选择题Given: What is the result?（）

A.Compilation fails due to an error in line 23.
B.Compilation fails due to an error in line 29.
C.A ClassCastException occurs in line 29.
D.A ClassCastException occurs in line 31.
E. The value of all four objects prints in natural order.

单项选择题Given: What is the result?（）

A.Compilation fails.
B.An exception is thrown at runtime.
C.[608, 609, 610, 612] [608, 610]
D.[608, 609, 610, 612] [608, 609, 610]
E.[606, 608, 609, 610, 612] [608, 610]
F.[606, 608, 609, 610, 612] [608, 609, 610]

多项选择题Given: Which two, inserted at line 11, will allow the code to compile?（）

A.public class MinMax<?> {
B.public class MinMax<? extends Number> {
C.public class MinMax<N extends Object> {
D.public class MinMax<N extends Number> {
E.public class MinMax<? extends Object> {
F.public class MinMax<N extends Integer> {

单项选择题Given: What is the result?（）

A.Compilation fails.
B.An exception is thrown at runtime.
C.[608, 610, 612, 629] [608, 610]
D.[608, 610, 612, 629] [608, 610, 629]
E.[606, 608, 610, 612, 629] [608, 610]
F.[606, 608, 610, 612, 629] [608, 610, 629]

单项选择题A programmer has an algorithm that requires a java.util.List that provides an efficient implementation of add(0, object), but does NOT need to support quick random access. What supports these requirements?（）

A.java.util.Queue
B.java.util.ArrayList
C.java.util.LinearList
D.java.util.LinkedList