abstract class Animal{? ?static String zl; static String js; abstract void shout();}?class Cat extends Animal{ Cat(String cat){ zl=cat; } void shout() { String cc="喵喵"; js=cc; System.out.println("種類"+zl+",叫聲"+js); } }?class Dog extends Animal{ Dog(String dog){ zl=dog; } void shout() { String dd="汪汪"; js=dd; System.out.println("種類"+zl+",叫聲"+js); }?}class we{ public static void main(String[] args) { Cat t1=new Cat("貓"); t1.shout(); Dog t2=new Dog("狗"); t2.shout(); }}