A、Compilation fails.
B、An exception is thrown at runtime.
C、An instance of Forest is serialized.
D、An instance of Forest and an instance of Tree are both serialized.
更多“ What is the result？（）<br /> <img src="https://nimg.ppkao.com/2018-08/zhoulian/2018080115230876652.jpg?sign=bf6e2d74c0db5546956f7c4412267672&t=62d1b4a8" />”相关的问题
A、r， t， t， B、r， e， o， C、Compilation fails. D、An exception is thrown at runtime.
A、r， t， t， B、r， e， o， C、Compilation fails. D、An exception is thrown at runtime.
A、 An exception is thrown at runtime. B、 r， e， o， C、 Compilation fails. D、 r， t， t，
A、A.No output is produced. 1 2 3 B、B.No output is produced. 2 3 4 C、C.No output is produced. 1 2 3 4 D、D.An exception is thrown at runtime. 1 2 3
A、A. Compilation fails. B、B. Pi is approximately 3. C、C. Pi is approximately 3.141593. D、D. An exception is thrown at runtime.
A、A.1 B、B.2 C、C.12 D、D.Compilation fails. E、E.No output is produced. F、F.An exception is thrown at runtime.
A、A.00 B、B.0001 C、C.000120 D、D.00012021 E、E.Compilation fails. F、F.An exception is thrown at runtime.
A、A.0， 0， 0 B、B.150， 60， 0 C、C.Compilation fails. D、D.150， 150， 150 E、E.An exception is thrown at runtime.
A、A.Compilation fails. B、B.An exception is thrown at runtime. C、C.The code executes normally and prints "sleep". D、D.The code executes normally， but nothing is printed.
A、A.null B、B.zero C、C.some D、D.Compilation fails. E、E.An exception is thrown at runtime.
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