Thread: xml read to table problem in getValueAt

I am posting what I think is relevant code.
In table class I have :

class Table extends AbstractTableModel {
   private List<String> columnHeaders;
   private List<Object> tableData;
   public Table(SortedSet<String> oznake, List<Object> aRows) {
      columnHeaders= new ArrayList<String>(oznake);
      tableData= new ArrayList<Object>(aRows);
      System.out.println("       tableData:" + tableData.size() + " "+ tableData);
   }
 
   public int getColumnCount() {
      return columnHeaders.size();
   }
   public int getRowCount() {
      return tableData.size();
   }
 
   public Object getValueAt(int row, int column) {
      List rowData = (List)(tableData.get(row));
      return (String)rowData.get(column);
   }
 
   public String getColumnName(int column) {
      return (String)(columnHeaders.get(column));
   }
}

In XmlRead I have:

public class XmlRead {
   public List<Object> getTable() {
      Map<String, String> rowMap = new LinkedHashMap<>();
      List<Object> aRows = new ArrayList<>();
                  rowMap.put(sOznaka, parser.getText());
                  aRows.add(Arrays.toString(rowMap.values().toArray(new String[rowMap.size()])));
      return (List<Object>)aRows;
   }
}

I get from table class:

tableData:3 [[2007-01-01, 27.485, 156.93, 0, 1.3170], [2019-05-06, 25.715, 0, 124.13, 1.1199], [2019-05-09, 25.718, 122.91, 0, 1.1193]]
 
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: class java.lang.String cannot be cast to class java.util.List (java.lang.String and java.util.List are in module java.base of loader 'bootstrap')
 
	at irose.IroseTable.getValueAt(IroseTable.java:71)

It looks as the problem is the line:

List rowData = (List)(tableData.get(row));

I can not figure it out why. How can I cast String to List or should I do something else?

I thought I can not, thanks. I also think I already build a list with the desired string. That is this, in the [[:

tableData:3 [[2007-01-01, 27.485, 156.93, 0, 1.3170], [2019-05-06, 25.715, 0, 124.13, 1.1199], [2019-05-09, 25.718, 122.91, 0, 1.1193]]

That output is in the String in the List. How can I split it in to 15 parts, not three?

I tried next:

   public Object getValueAt(int row, int col) {
      for(List<Object> td : (List)tableData) {
         for(int i=1;  i < tableData.size();  i++) {
            List string = (List)tableData.get(i);
            String string = (String)tableData.get(i);
            return tableData.get(i);
         }
      }
   }

but it gave me :

src/irose/IroseTable.java:48: error: incompatible types: Object cannot be converted to List<Object>
      for(List<Object> td : (List)tableData) {
                            ^

How do I do that?