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1. java swing : JTable strange behavior from getAccessibleChild() method resulting in null pointer in client code    stackoverflow.com

I've encountered a strange behavior from JTable (JDK 1.5_22):
After a selection change in the table and under some unknown particular circumstances, the JTable will call the cell renderer with 'null' for ...

2. Null Value in JTable    coderanch.com

Hi, I have a JTable that reads data from a database table. Some times the information in the table is null. I have created a loop that counts, traverses the columns and asks for the data type of the value inside columns Once it determines the values' datatype. it attached the corresponding csutom editor. For exmpla if the data type is ...

3. jTable.getSelected for null value?    forums.oracle.com

Umm that wont work. I need the null value of a selected row... This is why. If the selected cell of the Jtable is empty than I need to use an Insert Statement in SQL if it is not than I need to perform an update. It has to do with the contents of the cell not which cell is selected. ...

4. saves the word Null - Using jTable!!    forums.oracle.com

/** * Creates new form Main */ int numCol; public Main() { initComponents(); tResultado.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); setUpCategoryColumn(tResultado, tResultado.getColumnModel().getColumn(2)); setUpSituationColumn(tResultado, tResultado.getColumnModel().getColumn(3)); setUpDepartmentColumn(tResultado, tResultado.getColumnModel().getColumn(4)); if (ALLOW_COLUMN_SELECTION) { // true by default if (ALLOW_ROW_SELECTION) { //We allow both row and column selection, which //implies that we really want to allow individual //cell selection. tResultado.setCellSelectionEnabled(true); } tResultado.setColumnSelectionAllowed(true); ListSelectionModel colSM = tResultado.getColumnModel().getSelectionModel(); colSM.addListSelectionListener(new ListSelectionListener() { public void valueChanged(ListSelectionEvent ...

5. addition on JTable that has null values    forums.oracle.com

Don't just dump your database values in your TableModel; parse them a bit first and if you encounter a null value insert a "null" String, or even better a "" String value in your TableModel. That way a user can even insert a null value in your database table by typing "" (without the quotes). It does take a small bit ...

6. JTable.getCellEditor() returns null    forums.oracle.com

Start by read the first line of the first reply in this posting: [http://forums.sun.com/thread.jspa?threadID=5344497] We should not have to waste time repeating ourselves. I can't figure out why getCellEditor is returning null. Did you read the API to see what that method actually does and under what conditions it returns null? If you need further help then you need to create ...