CODEWITHSUNDEEP
javajavafx
Monika Galińska
Monika Galińska

Reputation: 201

Table View in JavaFx how to define setCellValueFactory

Hello i trying create table view, with dynamically columns I want to add in first column all headers except first one and another cells can be a 0 value

It's give me a error " java.lang.IndexOutOfBoundsException: Index: 2, Size: 2

I dont really understand how to definie setCellValueFactory

Ok

User adding Object in list, This list is set in columns header .

for(Object c : objectList){
    TableColumn<List<String>, String> table1 = new TableColumn<>();
    table1.setText(c.getName());
    table1.setCellValueFactory(data -> {
        List<String> rowValues = data.getValue();
        String cellValue= rowValues.get(objectList.indexOf(c));
        return new ReadOnlyStringWrapper(cellValue);
    });

Now i trying add rows to table for example

I have table headers 

|Row|Object1|Object2|

so i want to my table look like 

|Row|Object1|Object2|

|Object1|0  |0      |

|Object2|0  |0      |




ObservableList<String> datal = FXCollections.observableArrayList(); 
    for(Object a: objectList){
        datal.clear();
            int index = objectList.indexOf(a);
        if(index > 0 ){
            datal.add(a.getName());
        }else{
            datal.add(objectList.get(index+ 1).getName());
        }

        for(int i = index+ 1; i <objectList.size() ;i++){
            datal.add("0");
        }
        tableview.getItems().add(datal);

But when i datal.clear() i get error java.lang.IndexOutOfBoundsException: Index: 1, Size: 1, when i dont use this function all rows look this same

Edited

It's look ok but i need another set of zeroes in table

|Objects|Object1|Object2|Object3|

|Object1|null|0|0|

|Object2|null|null|0|

|Object3|null|null|null|

Upvotes: 0

Views: 1680

Answers (1)

fabian
fabian

Reputation: 82491

You're adding the same list over and over again as item. Probably you intend to create new lists inside the loop:

for(Object a: objectList){
    ObservableList<String> datal = FXCollections.observableArrayList();
    // datal.clear();
    ...
}

furthermore you assume there are at least objectList.size() items in every list, which won't be the case, unless all elements in objectList items are equal to the first one.

Therefore you need to therefore you need to check the size of the item list in the cellValueFactory:

table1.setCellValueFactory(data -> {
    List<String> rowValues = data.getValue();
    int index = objectList.indexOf(c);
    return index >= 0 && index < rowValues.size()
                 ? new SimpleStringProperty(rowValues.get(index)) // does just the same as ReadOnlyStringWrapper in this case
                 : null; // no value, if outside of valid index range
});

Otherwise you'll get those IndexOutOfBoundsExceptions for some of the rows...

Upvotes: 1

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