JavaServer Faces: How to print the size of a list ?

If you are using a datatable or any other component of Primefaces or JSF and want to print the size of … More

Primefaces : The commandLink, commandButton, nothing was invoking my actions or my actionListeners in the backend. It happens only when I call inside of the my tree or treeTable . How resolve this ?

It’s easy ! You need set true the attribute expand of the yours nodes and parents. Example : public TreeNode … More

JavaServer Faces : java.lang.IllegalStateException: Component ID has already been found in the view. How resolve ?

Firstly you really need validate your code, because this error says that you have two components with the same ID … More