public class RefAndVal1 {
    public static void main(String[] argv ){
        int i=7;
        String s="Hello";
        String[] sa ={"HelAlo"};

        test (i,s,sa);

        System.out.println(i);
        System.out.println(s);
        System.out.println(sa[0]);
    }

    public static void test(int i, String s, String[] sa){
        i +=7;
        s += "X";
        sa[0] += "X";
    }
}