Given the class 'ReadOnly' with the following behavior: A (protected) integer instance variable named 'val'. A constructor that accepts an integer and assigns the value of the parameter to the instance variable 'val'. A method name 'getVal' that returns the value of 'val'. Write a subclass named 'ReadWrite' with the following additional behavior: Any necessary constructors. a method named 'setVal' that accepts an integer parameter and assigns it the the 'val' instance variable. a method 'isDirty' that returns true if the setVal method was used to override the value of the 'val' variable.

I believe you want a subclass so here it is!

public class ReadWrite extends ReadOnly {

public ReadWrite(int initialValue){

super(initialValue);

}

private boolean modified = false;

public void setVal(int x) {

val = x;

modified = true;

}

public boolean isDirty() {

return modified;

}

}

Explanation:

I might be wrong, just check through it in case

Hope this helped

:)

answer is:

a). backstage view

explanation:

backstage view is the area where files and data about them is managed— creating, saving, printing, sending to others, inspecting for hidden metadata or personal information, and setting options. so in this way we can add many things to our document swiftly.

i hope you get the idea.