Getters returning null

Question

I know why my problem is occurring but i'm unsure on how to deal with it.

So I have 3 classes, 1 of these holds my getters & setters. In one class I am setting the values, in the other I am getting the values. When I get the values they are returned null. This is obviously because the two instances of the getter/setter object I created in the classes are separate from one another. What i'm trying to find out is how I can set the values in one class and get them in another without having two separate instances of the getter/setter class. My wording is terrible so here's a more visual explanation:

Class 1

Encapsulation encap = new Encapsulation();
encap.setValue(10);

Class 2

Encapsulation encap = new Encapsulation();
encap.getValue(); //I want this to return 10

Class 3 (Encapsulation)

private int value;

public void setValue(int value){
    this.value = value;
}

public int getValue(){
    return value
}

Answer 1

In Class2, you are creating a new instance of class Encapsulation. (Notice new Encapsulation()). So obviously, that won't hold the values.

Instead, I would suggest you two solutions:

First:

Save that object in an Application class as you are working on Android application.

public class TestApplication extends Application {
    public Encapsulation tempClass;
    public TestApplication () {
        // TODO Auto-generated constructor stub
    }

    @Override
    public void onCreate() { 
        // TODO Auto-generated method stub
        super.onCreate();
    }

    public Encapsulation getTempClass() {
        return tempClass;
    }

    public void setTempClass(Encapsulation tempClass) {
        this.tempClass  = tempClass;
    }
}

Now in your Activity:

//after setContentView
testAppObj = (TestApplication) getApplication();
testAppObj.setTempClass(myTempClassObj);

//retrieve as:
Encapsulation obj = testAppObj.getTempClass();

You must register your Application class in your manifest file just like you register your activities:

<application
        android:name="com.pkg.test.TestApplication " />

Second:

Keep object encap as static in Class1. So you can access it from calss2. (I don't prefer static.)

Hope it helps.