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publicclassTest{publicstaticvoidmain(Stringargs){classFoo{publicinti=3;}Objecto=(Object)newFoo();Foofoo=(Foo)o;System.out.printIn(foo.i);}}Whatistheresult?()
A.Compilationwillfail.
B.Compilationwillsucceedandtheprogramwillprint“3”
C.CompilationwillsucceedbuttheprogramwillthrowaClassCastExceptionatline6.
D.CompilationwillsucceedbuttheprogramwillthrowaClassCastExceptionatline7.
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更多 “ publicclassTest{publicstaticvoidmain(Stringargs){classFoo{publicinti=3;}Objecto=(Object)newFoo();Foofoo=(Foo)o;System.out.printIn(foo.i);}}Whatistheresult?() A.Compilationwillfail.B.Compilationwillsucceedandtheprogramwillprint“3”C.CompilationwillsucceedbuttheprogramwillthrowaClassCastExceptionatline6.D.CompilationwillsucceedbuttheprogramwillthrowaClassCastExceptionatline7. ” 相关考题
考题
classFoo{privateintx；publicFoo（intx）{this.x=x；}publicvoidsetX（intx）{this.x=x；}publicintgetX（）{returnx；}}publicclassGamma{staticFoofooBar（Foofoo）{foo=newFoo（100）；returnfoo；}publicstaticvoidmain（String[]args）{Foofoo=newFoo（300）；System.out.print（foo.getX（）+-）；FoofooFoo=fooBar（foo）；System.out.print（foo.getX（）+-）；System.out.print（fooFoo.getX（）+-）；foo=fooBar（fooFoo）；System.out.print（foo.getX（）+-）；System.out.prmt（fooFoo.getX（））；}}Whatistheoutputofthisprogram？（）
考题
publicclassTest{publicstaticvoidmain(String[]args){stringfoo=blue”;stringbar=foo;foo=green”;System.out.printIn(bar);}}Whatistheresult?()
A.Anexceptionisthrown.B.Thecodewillnotcompile.C.Theprogramprints“null”D.Theprogramprints“blue”E.Theprogramprints“green”
考题
publicclassTest{2.publicstaticvoidmain(Stringargs[]){3.classFoo{4.publicinti=3;5.}6.Objecto=(Object)newFoo();7.Foofoo=(Foo)o;8.System.out.printIn(foo.i);9.}10.}Whatistheresult?()
A.Compilationwillfail.B.Compilationwillsucceedandtheprogramwillprint“3”C.CompilationwillsucceedbuttheprogramwillthrowaClassCastExceptionatline6.D.CompilationwillsucceedbuttheprogramwillthrowaClassCastExceptionatline7.
考题
publicclassTest{publicstaticvoidleftshift(inti,intj){i=j;}publicstaticvoidmain(Stringargs[]){inti=4,j=2;leftshift(i,j);System.out.printIn(i);}}Whatistheresult?()
A.2B.4C.8D.16E.Thecodewillnotcompile.
考题
publicclasstest{publicstaticvoidadd3（Integeri）intval=i.intValue（）；val+=3；i=newInteger（val）；}publicstaticvoidmain（Stringargs[]）{Integeri=newInteger（0）；add3（i）；system.out.printIn（i.intValue（））；}Whatistheresult？（）A.Compilationwillfail.B.Theprogramprints“0”.C.Theprogramprints“3”.D.Compilationwillsucceedbutanexceptionwillbethrownatline3.
考题
publicclassTest{publicstaticvoidmain(Stringargs[]){classFoo{publicinti=3;}Objecto=(Object)newFoo();Foofoo=(Foo)o;System.out.println(i=＋foo.i);}}Whatistheresult?()
A.i=3B.Compilationfails.C.AClassCastExceptionisthrownatline6.D.AClassCastExceptionisthrownatline7.
考题
publicclassTest{publicstaticvoidmain(Stringargs){stringfoo=blue”;stringbar=foo;foo=green”;System.out.printIn(bar);}}Whatistheresult?()
A.Anexceptionisthrown.B.Thecodewillnotcompile.C.Theprogramprints“null”D.Theprogramprints“blue”E.Theprogramprints“green”
考题
publicclassFooimplementsRunnable(publicvoidrun(Threadt){system.out.printIn(Running.”);}publicstaticvoidmain(Stringargs){newthread(newFoo()).start();})Whatistheresult?()
A.Anexceptionisthrown.B.Theprogramexistswithoutprintinganything.C.Anerroratline1causescompilationtofail.D.Anerroratline6causesthecompilationtofail.E.“Running”isprintedandtheprogramexits.
考题
publicclassTest{publicstaticvoidleftshift(inti,intj){i=j;}publicstaticvoidmain(Stringargs){inti=4,j=2;leftshift(i,j);System.out.printIn(i);}}Whatistheresult?()
A.2B.4C.8D.16E.Thecodewillnotcompile.
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