单项选择题

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

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单项选择题

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"）； }

单项选择题

Given： What is the result？（）

A.An Exception is thrown with no other output
B.B, followed by an Exception.
C.Compilation fails due to an error on line 9.
D.Compilation fails due to an error on line 15.

Given： Which command-line invocations will compile？（）

Given：

Which command-line invocations will compile？（）