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”
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”
相关考题：
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”
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.
Stringfoo=blue”;Boolean[]bar=newBoolean[1];if(bar[0]){foo=green”;}Whatistheresult?() A.Foohasthevalueof“”B.Foohasthevalueofnull.C.Foohasthevalueof“blue”D.Foohasthevalueof“green”E.Anexceptionisthrown.F.Thecodewillnotcompile.
publicclasstest(publicstaticvoidmain(string[]args){stringfoo=args[1];stringfoo=args[2];stringfoo=args[3];})Andcommandlineinvocation:JavaTestredgreenblueWhatistheresult?() A.Bazhasthevalueof“”B.BazhasthevalueofnullC.Bazhasthevalueof“red”D.Bazhasthevalueof“blue”E.Baxhasthevalueof“green”F.Theprogramthrowsanexception.
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.
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.
Stringfoo=blue”;Booleanbar=newBoolean[1];if(bar[0]){foo=green”;}Whatistheresult?() A.Foohasthevalueof“”B.Foohasthevalueofnull.C.Foohasthevalueof“blue”D.Foohasthevalueof“green”E.Anexceptionisthrown.F.Thecodewillnotcompile.
publicclassTest{publicstaticvoidmain(Stringargs){Stringfoo=args[1];Stringbar=args;Stringbaz=args;System.out.printIn(baz=”＋baz);}}Andtheoutput:Baz=2Whichcommandlineinvocationwillproducetheoutput?() A.JavaTest2222B.JavaTest1234C.JavaTest4242D.JavaTest4321
publicclasstest(publicstaticvoidmain(stringargs){stringfoo=args[1];stringfoo=args;stringfoo=args;})Andcommandlineinvocation:JavaTestredgreenblueWhatistheresult?() A.Bazhasthevalueof“”B.BazhasthevalueofnullC.Bazhasthevalueof“red”D.Bazhasthevalueof“blue”E.Baxhasthevalueof“green”F.Theprogramthrowsanexception.