class Student { int age; Student(int age) { this.age = age;  } } public class TestClass { public static void main(String[] args) {  Student s1 = new Student(3);  Student[] sa = go(s1, new Student(5));  sa[0] = s1;  for(Student s : sa) {  System.out.print(s.age + " ");  }  } static Student[] go(Student s1, Student s2)  {  s1.age = 2; Student[] sa = {s2, s1};  return sa;  } }