title: Set The Data Type Of Column in a JTable
body: <p>I created a JTable with a table model . Now based on an input which i have, i want to make one column into a particular data Type. How do i do this?</p>
  
  <pre><code>import java.awt.GridLayout;
  import javax.swing.*;
  import javax.swing.event.*;
  import javax.swing.table.AbstractTableModel;
  
  public class MyTableModelTwo extends AbstractTableModel {
  
      private static final long serialVersionUID = 1L;
      private Object[][] data;
      private String[] columnNames;
  
      public MyTableModelTwo(Object[][] data) {
          this.data = data;
      }
  
      @Override
      public int getRowCount() {
          return data.length;
      }
  
      @Override
      public int getColumnCount() {
          return columnNames.length;
      }
  
      @Override
      public Object getValueAt(int rowIndex, int columnIndex) {
          return data[rowIndex][columnIndex];
      }
  
      @Override
      public Class&lt;?&gt; getColumnClass(int c) {
          return getValueAt(0, c).getClass();
      }
  
      @Override
      public boolean isCellEditable(int rowIndes, int columnIndex) {
          return true;
      }
  
      @Override
      public String getColumnName(int index) {
          return columnNames[index];
      }
  
      @Override
      public void setValueAt(Object value, int rowIndex, int columnIndex) {
          data[rowIndex][columnIndex] = value;
          fireTableCellUpdated(rowIndex, columnIndex);
      }
  
      public MyTableModelTwo(String[] columnNames, Object[][] data) {
          this.columnNames = columnNames;
          this.data = data;
      }
  }
  
  class MyTableTwo extends JPanel implements TableModelListener {
  
      private static final long serialVersionUID = 1L;
      private JTable table;
      private Object[][] data;
      private JTextField t;
  
      public MyTableTwo(int noElements, String[] columnNames) {
          data = new Object[noElements][columnNames.length];
          t = new JTextField();
          MyTableModelTwo m = new MyTableModelTwo(columnNames, data);
          table = new JTable(m);
          table.getModel().addTableModelListener(this);
          setLayout(new GridLayout(1, 0));
          JScrollPane scrollPane = new JScrollPane(table);
          add(scrollPane);
      }
  
      @Override
      public void tableChanged(TableModelEvent e) {
      }
  
      public JTextField returnT6() {
          return t;
      }
  }
  </code></pre>