A.11
B.12
C.编译失败
D.运行时异常被抛出
第1题:
A.55
B.56
C.65
D.66
第2题:
现有:
classTree{
privatestaticStringtree="tree";
StringgetTree(){returntree;}
}
classElmextendsTree{
privatestaticStringtree="elm";
publicstaticvoidmain(String[]args){
newElm().go(newTree());
}
}
voidgo(Treet){
Strings=t.getTree()+Elm.tree+tree+(newElm().getTree());
System.out.println(s);}
结果为:()
第3题:
A.55
B.56
C.65
D.66
第4题:
A.go
B.编译失败
C.代码运行,无输出结果
D.运行时异常被抛出
第5题:
现有:classWrenchfpublicstaticvoidmain(String[]args){Wrenchw=newWrench();Wrenchw2=newWrench();w2=go(w,w2);System.out.print(w2==w);}staticWrenchgo(Wrenchwrl,Wrenchwr2){Wrenchwr3=wrl;wrl=wr2;wr2=wr3;returnwr3;}结果是什么?()
A.false
B.true
C.编译失败
D.运行的时候有异常抛出