阿里巴巴java面试题 阿里巴巴(中国)网络技术有限公司JAVA面试题.docVIP

阿里巴巴java面试题 阿里巴巴(中国)网络技术有限公司JAVA面试题 导读：就爱阅读网友为您分享以下“阿里巴巴(中国)网络技术有限公司JAVA面试题”资讯，希望对您有所帮助，感谢您对92的支持! 选择题部分 1:1.Whatwillhappenwhenyouattempttocompileandrunthefollowingcode?2. 3.classBase 4. 5.{ 6. 7.inti=99; 8. 9.publicvoidamethod() 10. 11.{ 12. 13. 14. 15. 16. 17. 18. 19.{ 20. 21. 22. 23. 24. 25.} 26. 27.publicclassDerivedextendsBase 28. 29.{ 30. 31.inti=-1; 32. 33. 34. 35.publicstaticvoidmain(Stringargv[]) 36. 37.{ 38. 39. 40. 41.System.out.println(b.i);Baseb=newDerived();}amethod();Base()}System.out.println(“Base.amethod()”); 42. 43. 44. 45. 46.47. 48. 49.{50.51.52. 53. 54. 55.} 56. 57.Choices:}System.out.println(“Derived.amethod()”);publicvoidamethod()}b.amethod();A.Derived.amethod()-1Derived.amethod() B.Derived.amethod()99Derived.amethod() C.Compiletimeerror D.Derived.amethod() 2:1.Whichisthemostappropriatecodesnippetthatcanbeinsertedatline18inthefollo wingcode? 2. 3.(Assumethatthecodeiscompiledandrunwithassertionsenabled) 4. 5.1.importjava.util.*; 6. 7.2. 8. 9.3.publicclassAssertTest 10. 11.4.{ 12. 13.5. 14. 15.6. 16. 17.7.publicAssertTest()privateHashMapcctld; 18. 19.8. 20. 21.9. 22. 23.10. 24. 25.11.26. 27.12. 28.29.13. 30. 31.14. 32. 33.15. 34. 35.16. 36.37.17. 38. 39.18. 40. 41.19. 42. 43.20. 44. 45.21. 46. 47.22.}}returncountry;Stringcountry=(String)cctld.get(countryCode);//Whatshouldbeinsertedhere?{publicStringgetCountry(StringcountryCode)//othermethods}//morecode...cctld.put(“au”,”Australia”);cctld.put(“uk”,”UnitedKingdom”);cctld.put(“in”,”India”);cctld=newHashMap();{A.assertcountryCode!=null; B.assertcountryCode!=null:”Countrycodecannotbenull”; C.assertcctld!=null:”Nocountrycodedataisavailable”; D.assertcctld:”Nocountrycodedataisavailable”;3: 1.Whatwillbetheresultofexecutingthefollowingcode? 2.booleana=true; 3.booleanb=false; 4.booleanc=true; 5.if(a==true) 6.if(b==true)7.if(c==true) 8.else 9.System.out.println(“Somethingsaretrueinthisworld”);System.out.println(“Nothingistrueinthisworld!”);elseif(a(b=c))System.out.println(“It’stooconfusingtotellwhati