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Thread: subclassing DefaultMutableTreeNode Class

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    Default subclassing DefaultMutableTreeNode Class

    I have defined a subclass of DefaultMutableTreeNode Class in java :

    public AccountsTreeNode extends DefaultMutableTreeNode {

    }

    in this class I have a recursive method called getsorted(ArrayList list_) , which accummulated the list_.

    In this method, I have to call this.children() which returns the children of the node, but the children
    are all of type "DefaultMutableTreeNode". I have to call the method getsorted on these children,
    but since the getsorted is a mehtod of AccontsTreeNode, it gives me runtime cast error.

    What is the best solution to these problem? Should I convert children to AccountTreeNode type by
    overriding the children() method?


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    Default Re: subclassing DefaultMutableTreeNode Class

    Quote Originally Posted by parviin57 View Post
    I have defined a subclass of DefaultMutableTreeNode Class in java :

    public AccountsTreeNode extends DefaultMutableTreeNode {

    }

    in this class I have a recursive method called getsorted(ArrayList list_) , which accummulated the list_.

    In this method, I have to call this.children() which returns the children of the node, but the children
    are all of type "DefaultMutableTreeNode". I have to call the method getsorted on these children,
    but since the getsorted is a mehtod of AccontsTreeNode, it gives me runtime cast error.

    What is the best solution to these problem? Should I convert children to AccountTreeNode type by
    overriding the children() method?
    Class cast each child to the appropriate class

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