How do I pass a class as a parameter in Java?

Question

Is there any way to pass class as a parameter in Java and fire some methods from that class?

void main()
{
    callClass(that.class)
}

void callClass(???? c         


        

Answer 1

Construct your method to accept it-

public  void printClassNameAndCreateList(Class className){
    //example access 1
    System.out.print(className.getName());

    //example access 2
    ArrayList list = new ArrayList();
    //note that if you create a list this way, you will have to cast input
    list.add((T)nameOfObject);
}

Call the method-

printClassNameAndCreateList(SomeClass.class);

You can also restrict the type of class, for example, this is one of the methods from a library I made-

protected Class postExceptionActivityIn;

protected   void  setPostExceptionActivityIn(Class  postExceptionActivityIn) {
    this.postExceptionActivityIn = postExceptionActivityIn;
}

For more information, search Reflection and Generics.