题目内容
classClassA{publicintnumberOfinstances;protectedClassA(intnumberOfinstances){this.numberOflnstances=numberOfinstances;}}publicclassExtendedAextendsClassA{privateExtendedA(intnumberOfinstances){super(numberOflnstances);}publicstaticvoidmain(String[]args){ExtendedAext=newExtendedA(420);System.out.print(ext.numberOflnstances);}}Whichistrue?()
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