sun公司scjp題庫

1、1yModule1JAVA基礎基礎一、選擇題：一、選擇題：Question1Given:35.String#name=“JaneDoe“36.int$age=2437.Double_height=123.538.double~temp=37.5Whichtwoaretrue(Choosetwo.)A.Line35willnotcompile.B.Line36willnotcompile.C.Line37willnotcompile.D.

2、Line38willnotcompile.Answer:AD標識符以標識符以字母，下劃線，或者字母，下劃線，或者$開始開始Question2Given:11.publicclassTest12.publicstaticvoidmain(String[]args)13.intx=514.booleanb1=true15.booleanb2=false16.17.if((x==4)19.System.out.print(“2“)20.if(

3、(b2=true)22.23.WhatistheresultA.2B.3C.12D.23E.123F.Compilationfails.G.Anexceptionalisthrownatruntime.Answer:D注意注意20行，行，=為賦值，不要被騙為賦值，不要被騙Question3Given:42.publicclassClassA43.publicintgetValue()44.intvalue=045.booleansett

4、ing=true46.Stringtitle=“Hello“47.if(value||(setting48.if(value==149.50.:70.ClassAa=newClassA()316.System.out.println(“zero“)17.else18.System.out.println(“some“)19.20.‘WhatistheresultA.nullB.zeroC.someD.Compilationfails.E

5、.Anexceptionisthrownatruntime.Answer:D這題真惡心這題真惡心15行少個行少個ifQuestion7Given:10.intx=011.inty=1012.dol3.y14.x15.while(x10，所以直接跳出循環(huán)，輸出，所以直接跳出循環(huán)，輸出x=12Question9Given:35.intx=1036.do37.x38.while(x10)Howmanytimeswillline37beexec