单项选择题X 纠错
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.
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单项选择题
A.Compilation fails.
B.pi is bigger than 3.
C.An exception occurs at runtime.
D.pi is bigger than 3. Have a nice day.
E.pi is not bigger than 3. Have a nice day.
单项选择题
A.Line 33 must be called within a try block.
B.The exception thrown by method 1 in class A is not required to be caught.
C.The method declared on line 31 must be declared to throw a runtime exception.
D.On line 5 of class A,the call to method 2 of class B does not need to be placed in a try catch block.
单项选择题
A.no output
B.no outputassert is on
C.assert is on
D.no outputAn AssertionError is thrown.
E.assert is onAn AssertionError is thrown.
多项选择题
A.The instance gets garbage collected.
B.The code on line 33 throws an exception.
C.The code on line 35 throws an exception.
D.The code on line 31 throws an exception.
E.The code on line 33 executes successfully.
单项选择题
A.a
B.b
C.c
D.ac
E.abc
单项选择题
A.test end
B.Compilation fails.
C.test runtime end
D.test exception end
E.A Throwable is thrown by main at runtime.
单项选择题
A.00
B.0001
C.000120
D.00012021
E.Compilation fails
F.An exception is thrown at runtime
单项选择题
A.Alpha a = x;
B.Foo f = (Delta)x;
C.Foo f = (Alpha)x;
D.Beta b = (Beta)(Alpha)x;