How to Call a Class From another class

Question

I want to call class2 from class1 but class2 doesn't have a main function to refer to like Class2.main(args);

How can I call class2 from class1?

Answer 1

Suppose you have two classes:

Class1:

public class Class1 {
    //Your code above
}

Class2:

public class Class2 {
}

You can use Class2 in different ways:

Class Field:

public class Class1{
    private Class2 class2 = new Class2();
}

Method field:

public class Class1 {
    public void loginAs(String username, String password)
    {
         Class2 class2 = new Class2();
         class2.invokeSomeMethod();
         //your code
    }
}

Static methods from Class2 Imagine this is your Class2:

public class Class2 {
     public static void doSomething(){
     }
}

From class1 you can call Class2 :

public class Class1 {
    public void loginAs(String username, String password)
    {
         Class2.doSomething();
         //your code
    }
}

I hope this helps!

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Thanks!