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题目内容 (请给出正确答案)

1.importjava.util.*;2.publicclassTestSet{3.enumExample{ONE,TWO,THREE}4.publicstaticvoidmain(String[]args){5.Collectioncoll=newArrayList();6.coll.add(Example.THREE);7.coll.add(Example.THREE);8.coll.add(Example.THREE);9.coll.add(Example.TWO);10.coll.add(Example.TWO);11.coll.add(Example.ONE);12.Setset=newHashSet(coll);13.}14.}Whichstatementistrueaboutthesetvariableonline12?()

A.Thesetvariablecontainsallsixelementsfromthecollcollection,andtheorderisguaranteedtobepreserved.

B.Thesetvariablecontainsonlythreeelementsfromthecollcollection,andtheorderisguaranteedtobepreserved.

C.Thesetvariablecontainsallsixelementsfromthecoilcollection,buttheorderisNOTguaranteedtobepreserved.

D.Thesetvariablecontainsonlythreeelementsfromthecoilcollection,buttheorderisNOTguaranteedtobepreserved.


参考答案

更多 “ 1.importjava.util.*;2.publicclassTestSet{3.enumExample{ONE,TWO,THREE}4.publicstaticvoidmain(String[]args){5.Collectioncoll=newArrayList();6.coll.add(Example.THREE);7.coll.add(Example.THREE);8.coll.add(Example.THREE);9.coll.add(Example.TWO);10.coll.add(Example.TWO);11.coll.add(Example.ONE);12.Setset=newHashSet(coll);13.}14.}Whichstatementistrueaboutthesetvariableonline12?()A.Thesetvariablecontainsallsixelementsfromthecollcollection,andtheorderisguaranteedtobepreserved.B.Thesetvariablecontainsonlythreeelementsfromthecollcollection,andtheorderisguaranteedtobepreserved.C.Thesetvariablecontainsallsixelementsfromthecoilcollection,buttheorderisNOTguaranteedtobepreserved.D.Thesetvariablecontainsonlythreeelementsfromthecoilcollection,buttheorderisNOTguaranteedtobepreserved. ” 相关考题
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