JAVA编程常见面试题及答案7

14．对于以下程序，运行“java Mystery Mighty Mouse”，得到的结果:  Mouse  Mighty
public class Mystery {
public static void main(String[] args) {
Changer c = new Changer();
c.method(args);
System.out.println(args[0] + ” ” + args[1]);
}
static class Changer {
void method(String[] s) {
String temp = s[0];
s[0] = s[1];
s[1] = temp;
}
}
}

15．阅读下列程序，写出输出的结果: i = 100  i = 10  i = 10
class Xxx {
private int i;
Xxx x;
public Xxx() {
i = 10;
x = null;
}
public Xxx(int i) {
this.i = i;
x = new Xxx();
}
public void print() {
System.out.println(“i = ” + i);
System.out.println(x);
}
public String toString() {
return ”i = ” + i;
}
}
public class Test{
public static void main(String[] args) {
Xxx x = new Xxx(100);
x.print();
System.out.println(x.x);
}
}