Passing a method from another class

Question

I want to call a method from one class to another, don\'t know if that\'s possible without extends the class that contains the method. I\'ve tried to import the package, tha

Answer 1

You need an instance of object from class 1 to invoke that method, or if it doesn't need an instance - you can declare it as static and then you can write 1.method().

Answer 2

If you want to call the method without creating an instance of the class then make it static:

Class1
{
...
    public static void method1() {doSomething;}
}

Class2
{
    public class2()
    {
        Class1.method1(); //should be fine
    }
}

edit: If you want to pass data between Activities that is slightly different. Generally you do something like startActivityForResult() and then retrieve the return value, or use Intents like so:

How do I pass data between Activities in Android application?

Answer 3

In java you 2 main ways to do that:

1. Class2 extends Class1 and then you can call all protected or public methods of class 1.

2. Get an instance of class1 inside class2:

   Class1 c1 = new Class1();
   c1.someMethod();
   

Answer 4

Other way may be, create object for other class and then invoke the method on that object. Something like below.

new ClassA().yourMethod();