A.int LongB.Short LongC.Compilation fails.D.An exceptio……

单项选择题Given： Which statement is true？（）

A.Compilation fails.
B.An exception is thrown at runtime.
C.Synchronizing the run（） method would make the class thread-safe.
D.The data in variable "x" are protected from concurrent access problems.
E.Declaring the doThings（） method as static would make the class thread-safe.

多项选择题Given that Triangle implements Runnable， and： Which two statements， inserted independently at both lines 35 and 41， tend to allow both threads totemporarily pause and allow the other thread to execute？（）

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

多项选择题Given： 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Given: 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Given： 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.