多项选择题

Which two code fragments are most likely to cause a StackOverflowError?（）

A.
B.
C.
D.
E.
F.

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单项选择题Given: What is the result?（）

A.The value "4" is printed at the command line.
B.Compilation fails because of an error in line 5.
C.Compilation fails because of an error in line 9.
D.A NullPointerException occurs at runtime.
E.A NumberFormatException occurs at runtime.
F.An IllegalStateException occurs at runtime.

单项选择题Given: What is the result?（）

A.null
B.finally
C.null finally
D.Compilation fails.
E.finally exception

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

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.