rhanziy

상속, method overriding을 사용해 햄버거 만들기 package HamBurger; class HamBurger { public String name; public HamBurger() { this("햄버거"); } protected HamBurger(String name) { this.name = name; } public void cook() { System.out.println(this.name + "를 만듭니다."); System.out.println("빵 사이에 들어가는 재료는?"); System.out.println("> 양상추"); System.out.println("+ 패티"); System.out.println("+ 피클"); } } class CheeseBurger exte..

// 옛날방식 상속기능 const Student = function(name, age){ this.name = name, this.age = age } Student.prototype.sayHi = function(){ console.log(`안녕 나는 ${this.name}이야`); } let 학생1 = new Student('Kim', 20); 학생1.sayHi(); var arr = [1,2,3]; var arr2 = [3,6,8,3,2,5,7]; Array.prototype.remove3 = function(){ for(let i = 0; i < this.length; i++){ if(this[i] == 3){ this.splice(i,1); } } } arr.remove3(); arr2.remo..