CODEWITHSUNDEEP
java
Mazzy
Mazzy

Reputation: 14179

Pass an object created in one class to another class

I have a class named StatisticFrame. This class creates an object named stats inside a method. How can I pass this object created from StatisticFrame class to another class?

Upvotes: 1

Views: 83081

Answers (7)

Kalai Selvan Ravi
Kalai Selvan Ravi

Reputation: 2886

You can pass the created object as argument to another class constructor or it's method.

class Apples{
    public static void main(String[] args){

        ApplesTestDrive obj = new ApplesTestDrive();
        ApplesSampleTestDrive objOne = new ApplesSampleTestDrive();
        // Pass created object obj as argument to ApplesSampleTestDrive method.
        objOne.paint(obj);

        }
    }

class ApplesTestDrive{
    public String bucket;
    public ApplesTestDrive(){
      bucket = "blue";
    }
}

class ApplesSampleTestDrive{

    public void paint(ApplesTestDrive obj){
        System.out.println("Paint apple one: " + obj.bucket);
    }

}

Upvotes: 2

abishek kachroo
abishek kachroo

Reputation: 45

One way :-

Suppose you have one class Xyz The object that you want make the getter method for it and in another class Abc make the object of Xyz and with that object call the getter method and store the return of it in your current class

2nd way :-

use inheritance make the class as super

class Abc extends Xyz By this u will directly gets access to all the objects, methods present in super class

Hope that this make sense to you

Upvotes: 0

Sujith Kp
Sujith Kp

Reputation: 1105

Keep a variable that will point to the receiver object (say of type TargetFrame class) in your StatisticFrame class and then invoke the method (say SetStatsObject(object obj)) defined in the receiver object to receive the object.

your StaticFrame class will look like this 

class StatisticFrame {

     private TargetFrame targetObject = null;

     public StatisticFrame (TargetFrame obj) {
          this.targetObject = obj;
     }      

     public void Send (Object stats) {
          object stats = GetStatsObject(); // this will create and returns stats object
          targetObject.SetStatsObject(stats);
     }

     //... 
 }

and your TargetFrame (the receiving object's class) should look like this

class TargetFrame {

     public void SetStatsObject(Object stats) {
            // Do what ever you want with stats
     }

     // .....rest of the methods follows
 }

Upvotes: 4

Chris
Chris

Reputation: 16

You can create an object for the other class that you want to pass the object with the constructor that accepts your newly created object. Another way you can use some callback functions using interface

Upvotes: 0

amicngh
amicngh

Reputation: 7899

There are number of ways you can achieve this . either make the return type of method as stats and then in other class you can make object of StatisticFrame and call that method.

StatisticFrame sf=new StatisticFrame();
Stats st=sf.method();

Other way if you don't want to make return type as Stats then Make global private variable of type Stats and assign this in your method, and then one public getter method will return this object to other classes.

Upvotes: 1

Pshemo
Pshemo

Reputation: 124215

One of ways is that you can create method in your "another class" that will accept as argument object you want to pass, and you call that method from your base class

class Sender{
    public void createAndSend(Reciever reciver){
        String s="some data from Producer";
        reciver.recieve(s);
    }
}

class Reciever{
    public void recieve(String data){
        System.out.println("I recieved "+data);
    }
}

//lets test it
class TestX{
    public static void main(String[] args) {
        Sender s=new Sender();
        Reciever r=new Reciever();
        s.createAndSend(r);

    }
}

output: I recieved some data from Producer

Upvotes: 1

UVM
UVM

Reputation: 9914

Another class needs a method as an argument that expects your stats object and call that method from your class and pass your stats object

private void yourmethod(){

 Stats stas =
 AnotherClass ac = new AnotherClass();
ac.thatMethod(stats);
}


 class AnotherClass {

  public void thatMethod(Stats stats){

  }
 }

Upvotes: 1

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