I can't implement TreeNode with generics because of the getChildren() method.
I have the following class:
public class SystemTreeNode implements TreeNode<Integer> {
private Integer data;
private Map<Object, SystemTreeNode> childrensMap;
public Iterator<Map.Entry<Object, TreeNode<Integer>>> getChildren() {
return childrensMap.entrySet().iterator();
}
.
.
.
}
And it does not compile with the following error:
found : java.util.Iterator<java.util.Map.Entry<java.lang.Object,com.xeround.xms.ui.tree.SystemTreeNode>>
required: java.util.Iterator<java.util.Map.Entry<java.lang.Object,org.richfaces.model.TreeNode<java.lang.Integer>>>
I can change the childrensMap var to
Map<Object, TreeNode<Integer>> childrensMap;
but this is not good enough.
How can this be done?
