日韩欧美亚洲 _ 欧美亚洲一区 _ 日本亚洲欧美 _ 亚洲精品欧美 国产白袜脚足J棉袜在线观看_亚洲熟妇av一区二区三区_久久天天躁狠狠躁夜_精品众筹模特私拍在线

多項選擇題

class A { 
} 
class Alpha { 
private A myA = new A(); 
void dolt( A a ) { 
a = null; 
} 
void tryIt() { 
dolt( myA ); 
} 
} 
Which two statements are correct?()  

A. There are no instanced of A that will become eligible for garbage collection.
B. Explicitly setting myA to null marks that instance to be eligible for garbage collection.
C. Any call on tryIt() causes the private instance of A to be marked for garbage collection.
D. Private instances of A become eligible for garbage collection when instances of Alpha become eligible for garbage collection.

微信掃碼免費(fèi)搜題