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6 September, 07:25

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.

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  1. 6 September, 09:17
    0
    Java Class given below

    Explanation:

    class ReadOnly

    {

    protected int val;

    public ReadOnly (int arg)

    {

    val = arg;

    }

    public int getVal ()

    {

    return val;

    }

    }

    class ReadWrite extends ReadOnly

    {

    private boolean dirty;

    public ReadWrite (int arg)

    {

    super (arg);

    dirty = false;

    }

    public void setVal (int arg)

    {

    val = arg;

    dirty = true;

    }

    public boolean isDirty ()

    {

    return dirty;

    }

    }
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