Java Utililty Methods JTable Data

int addMissingRows(DefaultTableModel model, String[] values, int column)
For each value in the input array that does not appear in the specified column of at least one of the table model's rows, a new row is added with that value in the specified column and the empty string in the remaining columns.

int numInserted = 0;
if ((values != null) && (model != null)) {
 int columnCount = model.getColumnCount();
 if ((column >= 0) && (column < columnCount)) {
 Set existingValues = new HashSet();
 int rowCount = model.getRowCount();
 for (int row = 0; row < rowCount; row++) {
 existingValues.add(model.getValueAt(row, column));
...

boolean columnContains(TableModel table, int colIdx, T... values)
column Contains

HashSet<T> set = new HashSet<T>();
set.addAll(Arrays.asList(values));
for (int i = 0; i < table.getRowCount(); i++) {
 set.remove(table.getValueAt(i, colIdx));
 if (set.isEmpty()) {
 return true;
return false;

int findFirstRow(TableModel model, int col, String value)
Finds the first row of a TableModel that contains a specific String value in a given column.

String trimmedValue = value.trim();
for (int i = 0; i < model.getRowCount(); i++) {
 if (((String) model.getValueAt(i, col)).trim().equals(trimmedValue)) {
 return i;
return -1;

Component getRenderedComponent(JTable table, Object value, int row, int column)
get Rendered Component

return table.getCellRenderer(0, column).getTableCellRendererComponent(table, value, false, false, row,
 column);

Integer getRowByValue(TableModel model, int columnIndex, Object value)
get Row By Value

for (int i = model.getRowCount() - 1; i >= 0; --i) {
 if (model.getValueAt(i, columnIndex).equals(value)) {
 return i;
return null;

int getRowIndex(JTable table, int column, String value)
get Row Index

int rowCount = table.getModel().getRowCount();
for (int row = 0; row < rowCount; row++) {
 if (table.getModel().getValueAt(row, column).equals(value)) {
 return row;
return -1;

String[] getSelectedValues(JTable table, int column)
Returns the value of the specified column for each row currently selected in the table.

String[] selectedValues = new String[0];
if (table != null) {
 int columnCount = table.getColumnCount();
 if ((column >= 0) && (column < columnCount)) {
 int[] selectedRows = table.getSelectedRows();
 selectedValues = new String[selectedRows.length];
 for (int i = 0; i < selectedRows.length; i++) {
 selectedValues[i] = (String) table.getValueAt(selectedRows[i], column);
...

String getSelectValue(JTable table, String columnName)
get Select Value

int row = table.getSelectedRow();
if (row >= table.getModel().getRowCount())
 return null;
if (row == -1)
 return null;
int column = table.getColumn(columnName).getModelIndex();
String id = (String) table.getValueAt(row, column);
return id;
...

String getStringValueAt(JTable table, int row, int columnIndex)
get String Value At

return String.valueOf(table.getValueAt(row, columnIndex));

Object getValueAt(JTable table, int row, String columnTitle)
get Value At

int column = getColumnIndex(table, columnTitle);
return column == COLUMN_NOT_FOUND ? null : table.getValueAt(row, column);