Published: 20 Mar 2018 › Updated: 20 Mar 2018

일곱번째 개발일지
안녕하세요 #a991102 입니다.
오늘은 시간이 늦은 관계로 이론은 설명못드릴것 같습니다 ㅠㅠ
나중에는 이론도 같이 가져오겠습니다.
package 삼월이십일;
public class CardTest {
public static void main(String args[]) {
System.out.println("Card.width =" + Card.width);
System.out.println("Card.height=" + Card.height);
Card c1 = new Card();
c1.kind = "Heart";
c1.number = 7;
Card c2 = new Card();
c2.kind = "Space";
c2.number = 4;
System.out.println("c1 은 " + c1.kind + "," + c1.number
+"이며, 크기는 ("+ c1.width +"," +c1.height +")");
System.out.println("c2 은 " + c2.kind + "," + c2.number
+"이며, 크기는 ("+ c2.width +"," +c2.height +")");
System.out.println("c1의 width와 height 를 각각 50, 80으로 변경합니다");
c1.width = 50;
c1.height = 80;
System.out.println("c1 은 " + c1.kind + "," + c1.number
+"이며, 크기는 ("+ c2.width +"," +c2.height +")");
System.out.println("c2 은 " + c2.kind + "," + c2.number
+"이며, 크기는 ("+ c2.width +"," +c2.height +")");
}
}
class Card {
String kind;
int number;
static int width = 100;
static int height = 250;
}
이상입니다 !
package 삼월이십일;
public class ReferenceParamEx2 {
public static void main(String args[]) {
int [] x = {10};
System.out.println("main () : x =" + x[0]);
change(x);
System.out.println("After change(x)");
System.out.println("main() : x =" + x[0]);
}
static void change(int[] x){
x[0] = 1000;
System.out.println("change(): x=" + x[0]);
}
}
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