I am new to Swing. I have JTable with columns. I want to add a new column to the existing table with values in it. I am able to add a new column in table using model.addColumn("test"). But it gives me blank column - rather I want to display values in column and add it in the table.
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1Just fill the column's values using TableModel's method public void setValueAt(Object aValue, int rowIndex, int columnIndex);StanislavL– StanislavL2014-12-10 07:16:39 +00:00Commented Dec 10, 2014 at 7:16
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2 Answers
Use DefaultTableModel#addColumn(Object, Object[]
Adds a column to the model. The new column will have the identifier columnName. columnData is the optional array of data for the column. If it is null the column is filled with null values. Otherwise, the new data will be added to model starting with the first element going to row 0, etc. This method will send a tableChanged notification message to all the listeners.
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//I make new model
private void setNewTableModel(){
String[] header = new String[nArrays + 1];
header[0] = "";
for (int i = 1; i < header.length; i++)
header[i] = "Array" + i;
Object[][] data = new Object[4][nArrays + 1];
for (int i = 0; i < data.length; i++)
for (int j = 1; j < header.length; j++){
data[i][0] = "\"" + (i + 2) + "\"";
data[i][j]=j+i;
}
table.setModel(new DefaultTableModel(data, header));
}
