passing object to activity

Question

Can i initialize object in my first activity and you it in all activity???

public class Calc{
    int x;
    int y;
    public Calc(int x, int y) {
       th         


        

Answer 1

make

public class Calc implements Serializable {
int x;
int y;
public Calc(int x, int y) {
   this.x = x;
   this.y = y;
}
public int sum() {
    return x + y;
}

}

and

When you start your PreviewActivity

Intent intent = new Intent(mContext, PreviewActivity .class);
intent.putParcelableArrayListExtra("data",c);
startActivity(intent);

and in your PreviewActivity do this

Calc c=(Calc ) getIntent().getSerializableExtra("data");