public?class?Person?{????
????public?void?display(){
????????System.out.println("Play?Person...");
????}????
????static?void?display(Person?person){
????????person.display();
????}
}
????????
public?class?Husband?extends?Person{????
????public?static?void?main(String[]?args)?{
????????Husband?husband?=?new?Husband();
????????Person.display(husband);??????
????}
}
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