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: What is the result?（）

A.null
B.zero
C.some
D.Compilation fails.
E.An exception is thrown at runtime.

单项选择题Given: What is the result?（）

A.B
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 14.
E.An Exception is thrown with no other output.

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

Given:

Which command-line invocations will compile?（）