《ocjp题库详解》ppt课件

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1、SCJP6.0AlbertChu00135.String#name="JaneDoe";36.int$age=24;37.Double_height=123.5;38.double~temp=37.5;Whichtwostatementsaretrue?(Choosetwo.)A.Line35willnotcompile.B.Line36willnotcompile.C.Line37willnotcompile.D.Line38willnotcompile.AD0021.publicclassTestString1{2.publicstatic

2、voidmain(String[]args){3.Stringstr="420";4.str+=42;5.System.out.print(str);6.}7.}Whatistheoutput?A.42B.420C.462D.42042E.Compilationfails.F.Anexceptionisthrownatruntime.D0031.publicclassTest{2.publicstaticvoidmain(String[]args){3.intx=5;4.booleanb1=true;5.booleanb2=false;6.7.

3、if((x==4)&&!b2)8.System.out.print("1");9.System.out.print("2");10.if((b2=true)&&b1)11.System.out.print("3");12.}13.}Whatistheresult?A.2B.3C.12D.23E.123F.Compilationfails.G.Anexceptionisthrownatruntime.D00422.publicvoidgo(){23.Stringo="";24.z:25.for(intx=0;x<3;x++){26.for(int

4、y=0;y<2;y++){27.if(x==1)break;28.if(x==2&&y==1)breakz;29.o=o+x+y;30.}31.}32.System.out.println(o);33.}Whatistheresultwhenthego()methodisinvoked?A.00B.0001C.000120D.00012021E.Compilationfails.F.Anexceptionisthrownatruntime.C00510.intx=0;11.inty=10;12.do{13.y--;14.++x;15.}whil

5、e(x<5);16.System.out.print(x+","+y);Whatistheresult?A.5,6B.5,5C.6,5D.6,6B0061.publicclassBreaker{2.staticStringo="";3.publicstaticvoidmain(String[]args){4.z:5.o=o+2;6.for(intx=3;x<8;x++){7.if(x==4)break;8.if(x==6)breakz;9.o=o+x;10.}11.System.out.println(o);12.}13.}Whatisther

6、esult?A.23B.234C.235D.2345E.2357F.23457G.Compilationfails.G0071.publicclassBreaker2{2.staticStringo="";3.publicstaticvoidmain(String[]args){4.z:5.for(intx=2;x<7;x++){6.if(x==3)continue;7.if(x==5)breakz;8.o=o+x;9.}10.System.out.println(o);11.}12.}Whatistheresult?A.2B.24C.234D

7、.246E.2346F.Compilationfails.B0081.publicclassSpock{2.publicstaticvoidmain(String[]args){3.Longtail=2000L;4.Longdistance=1999L;5.Longstory=1000L;6.if((tail>distance)^((story*2)==tail))7.System.out.print("1");8.if((distance+1!=tail)^((story*2)==distance))9.System.out.print("2

8、");10.}11.}Whatistheresult?A.1B.2C.12D.Compilationfails.E.Nooutputisproduce