Getting the Number of Rows and Columns in a JTable Component : JTable « Swing « Java Tutorial

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Java Tutorial » Swing » JTable   14. 58. 53. Getting the Number of Rows and Columns in a JTable Component import javax.swing.JTable; public class Main {   public static void main(String[] argv) throws Exception {     Object[][] cellData = { { "1-1", "1-2" }, { "2-1", "2-2" } };     String[] columnNames = { "col1", "col2" };     JTable table = new JTable(cellData, columnNames);     int rows = table.getRowCount();     int cols = table.getColumnCount();     System.out.println(rows);     System.out.println(cols);   } } 14. 58. JTable 14. 58. 1.  Creating a JTable 14. 58. 2.  Creating a JTable with rows of variable height 14. 58. 3.  Creating a Scrollable JTable Component 14. 58. 4.  public JTable(Vector rowData, Vector columnNames) 14. 58. 5.  Retrieve the value in the visible cell (1,2) in a JTable 14. 58. 6.  Retrieve the value in cell (1,2) from the model 14. 58. 7.  Build a table from list data and column names 14. 58. 8.  To change cell contents in code: setValueAt(Object value, int row, int column) method of JTable. 14. 58. 9.  Disable auto resizing to make the table horizontal scrollable 14. 58. 10.  Manually Positioning the JTable View 14. 58. 11.  Selection Modes 14. 58. 12.  Printing Tables Sample 14. 58. 13.  Specify the print mode: public boolean print(JTable.PrintMode printMode) 14. 58. 14.  Specify a page header or footer during printing 14. 58. 15.  No user interaction to print 14. 58. 16.  Listening to JTable Events with a TableModelListener 14. 58. 17.  Control the selection of rows or columns or individual cells 14. 58. 18.  Table selection mode 14. 58. 19.  JTable with Tooltip 14. 58. 20.  Table Selection Events and Listeners 14. 58. 21.  Print a JTable out 14. 58. 22.  JTable Look and Feel 14. 58. 23.  Listening for Selection Events in a JTable Component 14. 58. 24.  Listening for Changes to the Rows and Columns of a JTable Component 14. 58. 25.  Listening for Column-Related Changes in a JTable Component 14. 58. 26.  Programmatically Starting Cell Editing in a JTable Component 14. 58. 27.  Select a column - column 0 in a JTable 14. 58. 28.  Select an additional range of columns - columns 1 to 2 14. 58. 29.  Deselect a range of columns - columns 0 to 1 14. 58. 30.  Select a row - row 0 14. 58. 31.  Select an additional range of rows - rows 1 to 2 14. 58. 32.  Deselect a range of rows - rows 0 to 1 14. 58. 33.  Select a cell: cell (2,1) 14. 58. 34.  Select all cells 14. 58. 35.  Deselect all cells 14. 58. 36.  Enable row selection (default) in a JTable 14. 58. 37.  Enable column selection in a JTable 14. 58. 38.  Enable cell selection in a JTable 14. 58. 39.  When the width of a column is changed, the width of the right-most column is changed 14. 58. 40.  When the width of a column is changed, all columns to the right are resized 14. 58. 41.  When the width of a column is changed, only the columns to the left and right of the margin change 14. 58. 42.  When the width of a column is changed, the widths of all columns are changed 14. 58. 43.  Use a regexFilter to filter table content 14. 58. 44.  Don't show any grid lines 14. 58. 45.  Show only vertical grid lines 14. 58. 46.  Show only horizontal grid lines 14. 58. 47.  Set the grid color 14. 58. 48.  Show both horizontal and vertical grid lines (the default) 14. 58. 49.  Getting the Gap Size Between Cells in a JTable Component 14. 58. 50.  Add 5 spaces to the left and right sides of a cell. 14. 58. 51.  Scrolling a Cell to the Center of a JTable Component 14. 58. 52.  Setting Tool Tips on Cells in a JTable Component 14. 58. 53.  Getting the Number of Rows and Columns in a JTable Component 14. 58. 54.  Making a Cell Visible in a JTable Component 14. 58. 55.  Increase the row height 14. 58. 56.  Determining If a Cell Is Visible in a JTable Component 14. 58. 57.  Allowing the User to Resize a Column in a JTable Component 14. 58. 58.  Disabling User Edits in a JTable 14. 58. 59.  Creating image out of a JTable