class People{
     private int height;
     private int weight;
     private int age;

     public int growth(){
             if(age < 20){
             height ++;
            }
     }
}


public class life{

    public class main(String[] args){
  
    People I;
     I.growth();
     I.height = 180;


    }


}


은 훼이크고

이건 내인생

height에 180 넣고싶은데 방법이없음