How to make the column in the table with the formula
Hi all..This is my class
public class MyNumber{
private int num;
public int getNum(){
return num;
}
public void setNum( int num){
this.num = num;
}
}
Consider that designing a table with FXML Editor (Builder scene in this case)and here are some of my codes
private TableView tab;
private TableColumn<MyNumber, Integer> tabColInput;
private TableColumn tabColOutput;
tab.setEditable(true);
tabColInput.setEditable(true);
tabColInput.setCellValueFactory( new PropertyValueFactory<Person,Integer>("num") );
tabColInput.setCellFactory(TextFieldTableCell.forTableColumn());
tabColInput.setOnEditCommit(
new EventHandler<CellEditEvent<MyNumber, Integer>>() {
@Override
public void handle(CellEditEvent<MyNumber, Integer> t) {
((MyNumber) t.getTableView().getItems().get(
t.getTablePosition().getRow())
).setNum(t.getNewValue());
}
}
);
Problem:I want to tabColOutput to always show the result for tabColInput multiplied by 2
for example:
When I change a line in tabColInput 10, tabColOutput shows 20
When I change a line in tabColInput to 3, tabColOutput show 6
Could someone advice me how do?
PS: I'm not native English, so I'm sorry if I tell it fake ^^
You're up-to-date data are probably not ObservableValues as properties, so the TableView cannot update dynamically as modification of data items.
Tags: Java
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