单项选择题
package test；
class Target {
public String name = “hello”；
}
What can directly access and change the value of the variable name？（）
A. any class
B. only the Target class
C. any class in the test package
D. any class that extends Target
相关考题
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多项选择题
Whichtwoaretrue？（）
A. An encapsulated， public class promotes re-use.
B. Classes that share the same interface are always tightly encapsulated.
C. An encapsulated class allows subclasses to overload methods， but does NOT allow overriding methods.
D. An encapsulated class allows a programmer to change an implementation without affecting outside code. -
单项选择题
fooandbararepublicreferencesavailabletomanyotherthreads.fooreferstoaThreadandbarisanObject.Thethreadfooiscurrentlyexecutingbar.wait（）.Fromanotherthread，whichstatementisthemostreliablewaytoensuethatfoowillstopexecutingwait（）？
A. foo.notify（）；
B. bar.notify（）；
C. foo.notifyAll（）；
D. Thread.notify（）；
E. bar.notiFYAll（）；
F. Object.notify（）； -
单项选择题
void waitForSignal（） { Object obj = new Object（）； synchronized （Thread.currentThread（）） { obj.wait（）； obj.notify（）； } } Which is true？（）
A. This code may throw an InterruptedException.
B. This code may throw an IllegalStateException.
C. This code may throw a TimeoutException after ten minutes.
D. This code will not compile unless “obj.wait（）” is replaced with “（（Thread） obj）.wait（）”.
E. Reversing the order of obj.wait（） and obj.notify（） may cause this method to complete normally.
F. A call to notify（） or notifyAll（） from another thread may cause this method to complete normally.
