please tell me what is wrong in this code

Question

class Student {
private String name,add;
private int age;
public Student() {
name = "Unknown";
age = 0;
add = "not available";
}
public void setInfo(String n,int c,String z) {
name = n;
age = c;
add = z;
}
public String[] getInfo() {
return name,age,add;
}
}

class Program
{
public static void main(String[] args) {
Student a = new Student();
System.out.println(a.getInfo());
a.setInfo("Xyz",45,"gupta");
String b = a.getInfo();
System.out.println(b);
}
}