달나라 노트

class PeopleInfo { String name; String planet; public void setName(String name) { this.name = name; } public void setPlanet(String planet) { this.planet = planet; } public void introduce() { System.out.println("Hello. I'm " + this.name + ". I live in " + this.planet + "."); } public void introduce(int x) { System.out.println("Hello. I'm " + this.name + ". I live in " + this.planet + ". And I'm "..