41. 문자열 비교와 배열 참조 복사

1public class Main {
2    public static void main(String[] args) {
3        String a = "java";
4        String b = "java";
5        String c = new String("java");
6        String d = c;
7        System.out.println((a == b) + " " + (a == c) + " " + a.equals(c) + " " + (c == d));
8        d = d + "!";
9        System.out.println(c + " " + d);
10        int[] p = {1, 2, 3};
11        int[] q = p;
12        int[] r = p.clone();
13        q[0] = 9;
14        r[1] = 8;
15        System.out.println(p[0] + p[1] + p[2]);
16        System.out.println(p[0] + "" + p[1] + r[0]);
17    }
18}