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？（）
A.Jar A
B.Jar B
C.Jar C
D.Jar D
E.Jar E
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Given：
Which line of code marks the earliest point that an object referenced by intObj becomes a candidate for garbage collection？（）
A.Line 16
B.Line 17
C.Line 18
D.Line 19
Given：
What is the result？（）
A.Exception
B.A NullPointerException is thrown at runtime.
C.Compilation fails because of an error in line 20.
D.Compilation fails because of an error in line 14.
Given：
What is the result？（）
A.null
B.zero
C.some
D.Compilation fails.
E.An exception is thrown at runtime.
Given：
What is the result？（）
A.2
B.24
C.234
D.246
E.2346
Given：
What is the result？（）
A.null
B.finally
C.null finally
D.Compilation fails.
E.finally exception
Given：
What is the result？（）
A.harrier
B.shepherd
C.retriever
D.Compilation fails.
E.retriever harrier
Given：
What is the result？（）
A.1
B.12
C.14
D.123
Click the Exhibit button
Which two statements are true if a NullPointerException is thrown on line 3 of class C？（）
A.The application will crash.
B.The code on line 29 will be executed.
C.The code on line 5 of class A will execute.
D.The code on line 5 of class B will execute.
E.The exception will be propagated back to line 27.
Given：
Which command-line invocations will compile？（）
A.javac Mule.java
B.javac -source 1.3 Mule.java
C.javac -source 1.4 Mule.java
D.javac -source 1.5 Mule.java
Given a method that must ensure that its parameter is not null：
What， inserted at line 12， is the appropriate way to handle a null value？（）
A.assert value == null；
B.assert value != null， "value is null"；
C.if （value == null） { throw new AssertionException（"value is null"）； }
D.if （value == null） { throw new IllegalArgumentException（"value is null"）； }
最新试题
Given：Which command-line invocations will compile？（）
Given：What is the result？（）
Given：Which code， inserted at line 16， correctly retrieves a local instance of a Point object？（）
Given：What are four valid examples of polymorphic method calls？（）
Given：What is the result？（）
Click the Exhibit button.What two must the programmer do to correct the compilation errors？（）
Given：What is the result？（）
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？（）
Click the Exhibit buttonWhich two statements are true if a NullPointerException is thrown on line 3 of class C？（）
Given：What is the result？（）