多项选择题

Given that Triangle implements Runnable， and： Which two……

Given that Triangle implements Runnable， and：

Which two statements， inserted independently at both lines 35 and 41， tend to allow both threads to temporarily pause and allow the other thread to execute？（）

A.Thread.wait（）；
B.Thread.join（）；
C.Thread.yield（）；
D.Thread.sleep（1）；
E.Thread.notify（）；

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多项选择题Which three changes should be made to adapt this class to be used safely by multiple threads？（）

A.declare reset（） using the synchronized keyword
B.declare getName（） using the synchronized keyword
C.declare getCount（） using the synchronized keyword
D.declare the constructor using the synchronized keyword
E.declare increment（） using the synchronized keyword

单项选择题What is the result？（）

A.Compilation fails.
B.An exception is thrown at runtime.
C.The code executes and prints "running".
D.The code executes and prints "runningrunning".
E.The code executes and prints "runningrunningrunning".

单项选择题What is the result？（）

A.Compilation fails.
B.An exception is thrown at runtime.
C.The code executes normally and prints "sleep".
D.The code executes normally， but nothing is printed.

单项选择题What is the result？（）

A.The code will deadlock.
B.The code may run with no output.
C.An exception is thrown at runtime.
D.The code may run with output "0 6".
E.The code may run with output "2 0 6 4".
F.The code may run with output "0 2 4 6".

多项选择题Which two statements are true？（）

A.The output could be 8-1，7-2，8-2，7-1
B.The output could be 7-1，7-2，8-1，6-1
C.The output could be 8-1，7-1，7-2，8-2
D.The output could be 8-1，8-2，7-1，7-2