Need example of backing bean for selectBooleanCheckbox and dataTable

Does anyone have an example backing bean for selectBooleanCheckbox and dataTable combination?
I am trying to figure out how to create a dataTable with one column of checkboxes, when the checkboxes are selected, need to get a collection of all records that were selected.
Also need to identify one of the columns in the records that were selected and send it to the EJB services to do update.
columns in dataTable are userid and name. Both are string values.

What is the difference between myDataItem, myDataItems and myDataList in MyBean.java?
Where did myDataItem and myDataList come from? It isn't declared or initialized in MyBean.java

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Need example of backing bean for selectBooleanCheckbox and dataTable

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