how to reference array from another class

You cannot access it from another class as long as it is created as an automatic variable (in other terms, local variable). In the above code, your "afz" construct will be visible only inside the main method (and can be used only after it's instatiation). To make it visible for other classes you can define it as an instance variable. I.e:

public class aff_array {

    String name;
    aff_array[] afz;

public static void main (String[] args) {

    int z = 3; //total no of affirmations
    int x = 1;
    afz = new aff_array[z];  //dim

First, you should define it as private, and create a getter method (this is a common practice, to respect encapsulation), and then get it on the other class simply calling this method.

You can access public instance variable "name" of aff_array class

//this will print value of instance variable name
System.out.println(afz[1].name);

//If you want to modify the value of variable
afz[1].name = "modified name";

However this is not recommended. Protect your instance variable with private access modifier and access it using public getter, setter methods.

Example: public class aff_array { private String name; public String getName() { return this.name; }

    public void setName(String new_name)
    {
        //You can add some validations here
        this.name = new_name;
    }

    public static void main (String[] args) {

    int z = 3; //total no of affirmations
    int x = 1;
    aff_array[] afz = new aff_array[z];  //dim

    while ( x < z ) {
        afz[x] = new aff_array();  // create objects for array
        x = x + 1;
    }

    //To print name 
    System.out.println(afz[1].getName());

    //to set new value to name
    afz[1].setName("i am the best");
    afz[2].setName("you are the rest");

}

So i have tried to add getters and it looks like this public class aff_array { String name; aff_array[] afz;

public aff_array[] getAfz() {
    return afz;
}

public String getName() {
    return name;
}

public static void main (String[] args) {

        int z = 3; //total no of affirmations
        int x = 1;
        aff_array[] afz = new aff_array[z];  //dim

        while ( x < z ) {
            afz[x] = new aff_array();  // create objects for array
            x = x + 1;
        }

        afz[1].name = "i am the best";
        afz[2].name = "you are the rest";

    }

This is the other class and where i want the array value to replace aff_array.class.getName() with aff_array[] getAfz() but i dont know how to do it or reference afz(1) for example (getName is working)

 public void onReceive(Context context, Intent intent)
    {

        setNotification(context, aff_array.class.getName());
        WakeLocker.acquire(context);
        Toast.makeText(context,"One shot alarm received. No more toasts will be shown.", Toast.LENGTH_SHORT).show();
        WakeLocker.release();
    }