値の転送と参照の転送について

/**
 * @author: xzy
 * @date : 2020/7/23 14:35
 * @desciption :                       
 *                                        
 *                               .
 */
public class D {

    String str =new String("good");
    char[] chars={'a','b','c'};
    int in=99999999;


    public static void main(String[] args) {
        D d = new D();
        d.change(d.str, d.chars,d.in);
        System.out.println(d.str+"and");
        System.out.println(d.chars);
        System.out.println(d.in);


    }
    void change(String str,char  cha[],int in){
        str="  ";
        cha[0]='g';
        in=0;
        System.out.println(str);
    }
}