現(xiàn)有:
class Wrench f
public static void main(String [] args) {
Wrench w=new Wrench(); Wrench w2=new Wrench();
w2=go (w, w2);
System.out.print (w2==w);
}
static Wrench go (Wrench wrl, Wrench wr2) {
Wrench wr3=wrl; wrl=wr2; wr2=wr3;
return wr3;
}
結(jié)果是什么?()
A. false
B. true
C.編譯失敗
D.運行的時候有異常拋出