need help in ArrayList

Example Question :

• A constructor (with parameters) that assigns values to all data members.

• Getters for all of the data members above.

• A private static ArrayList named list that holds a list of Student objects.

• A static getter named getList() that returns the ArrayList above.

The things i have done :

public class Student{
String name;
String gender;
int year;
String[] countries;

public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}




I want to ask how to do the "ArrayList named list that holds a list of Student objects" and did i do any things wrong in declaring the variable for Student?:(:(

Do you know how to declare a static variable? And do you know how to use ArrayList? Basically, what the part you've emphasized is asking is to declare a static variable named list, and that is an ArrayList type object meant to hold Student objects.

Here's a couple links to help you:
Understanding Instance and Class Members (The Java™ Tutorials > Learning the Java Language > Classes and Objects) (on static variables)
Java: ArrayList (on ArrayList stuff--you can see him creating and modifying ArrayLists here)

i still confusing with it :( can you make some simple example for me for the 4steps?(name+gender)

If you clicked the links I provided, you'd find examples of everything you have to do. All that's left is for you to put 2 and 2 together. I can't sit behind you and help you during an exam--if you don't bother to learn HOW to do it, you're not going to have a whole lot of luck in the future, I'm afraid.

You better make your class variables as private.It makes some sense in your class.

• A private static ArrayList named list that holds a list of Student objects.

import java.util.ArrayList;


public class Student{
private static ArrayList<Student> list = new ArrayList<Student>();
}

If I am wrong with this statement please help me do some correction.
Thank you..^^

Code:

---

public class ListEx {
       
       
        public static void main(String[] args) {       
               
               
                new Student("mak","male");
               
                new Student("pandian","male");
               
                new Student("nithya","female");
               
                ArrayList list=Student.getList();
               
                for(Object o : list){
                       
                        Student s=(Student)o;
                       
                        System.out.println(s.getName());
                       
                        System.out.println(s.getGender());                                               
                       
                }
               
       
               
               
        }

}


class Student {
       
       
private String name;
       
        private String gender;
       
        private static ArrayList<Student> list=new ArrayList<Student>();
       
       
        public Student(String name,String gen) {               
                this.gender=gen;
                this.name=name;       
                list.add(this);
        }
       

        public String getName() {
                return name;
        }

       

        public String getGender() {
                return gender;
        }


        public static ArrayList getList() {
                return list;
        }
       
       
}

---

Hope this helps..