varying JTable Row Height, not Homogeneously

[Venkata Cherukuri]

How can I have my JTable display varying Row Height. This one should work the same way as Excel- where in You drag a row and it's height increases.

[VIJAY Yadlapati]

You can change the height of a row programatically using setRowHeight(). I think you have to implement drag-drop for your requirement.

[Jose Botella]

Welcome to the Ranch Venkata.
This program can resize row height either dragging or via ctrl-s when only one row is selected.

import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.awt.*;
public class Table1 extends JFrame {
  Object[][] data = { { "1", "2", "3", "4", "5", "6" } ,
    { "1", "2", "3", "4", "5", "6" },  {"1", "2", "3", "4", "5", "6"}
  };
  Object[] header = { "A", "B", "C" , "D", "E", "F" }; 
  static JTable table; 
  
  Table1() {
    table = new JTable(data, header);
    getContentPane().add(new JScrollPane(table));
    table.getInputMap().put(
      KeyStroke.getKeyStroke(KeyEvent.VK_S , InputEvent.CTRL_MASK) ,
        Sizing.name);
    table.getActionMap().put(Sizing.name, new Sizing()); 
    HeightListener heightLtr = new HeightListener();
    table.addMouseListener(heightLtr);
    table.addMouseMotionListener(heightLtr);
    pack();
    setVisible(true);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }
  
  public static void main(String[] args) {
    Table1 frame = new Table1();    
  }
  
  static class Sizing extends AbstractAction {
    static String name = "Sizing";
    Sizing() {
      super(name);   
    }
    public void actionPerformed(ActionEvent e) {
        int[] selected = table.getSelectedRows();
        if(selected.length != 1) return;
        String size = JOptionPane.showInputDialog(
          "Setting the height of the row: " + selected[0] , 
            ""+ table.getRowHeight(selected[0]) ); 
        if(size == null) return;
        table.setRowHeight(selected[0], Integer.parseInt(size));
    }
  }
  
  class HeightListener extends MouseInputAdapter {
    Point first , last;
    public void mouseDragged(MouseEvent e) {
      if(first == null) {
        first = e.getPoint();
        table.setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
      }
      last = e.getPoint();
    }
    public void mouseReleased(MouseEvent e) {
      if(first == null) return;
      int height = (int) (last.getY() - first.getY());
      if(height == 0) {
        table.setCursor(Cursor.getDefaultCursor());
        first = null;
        return;
      }
      int row = table.rowAtPoint(first);
      int rowHeight = table.getRowHeight(row);
      table.setRowHeight(row, rowHeight + height);
      table.setCursor(Cursor.getDefaultCursor());
      first = null;
    }         
  }
}

On page 591 of Swing 2nd ed. by Robinson and Vorobiev there is an example of a table whose rows adjust automatically to the height of multiple line of text introduced.