Removing a Column from a JTable

In this section, you will learn how to remove a column from a JTable component that uses the table model.

Removing a Column from a JTable

Removing a Column from a JTable

     

In this section, you will learn how to remove a column from a JTable component that uses the table model. Removing a column from a JTable means deleting  the column containing the data. For removing the column, use the removeColumn() method, for this, you need the index of column that have to be deleted from the JTable. 

Description of program:

This program helps you in how to remove a column from a JTable. For this, have or make  a table that have three columns containing data with the column header. The text color of the header is black and the color of  the background is yellow. After that,  this program uses the Remove method for removing the column from JTable through removeColumn() method. The removeColumn() method can  removes any specified column in the JTable. After removing  it, there will be two columns: Name and Subject.

Description of code:

removeColumn( TableColumn tcol):
This method is used for removing a column from JTable. It takes an object of TableColumn that represents all attributes of a column in a JTable.

    tcol: It denotes the TableColumn that will be removed.

Here is the code of program:

import javax.swing.*;
import javax.swing.table.*;
import java.awt.*;

public class RemoveColumn{
  DefaultTableModel model;
  JTable table;
  public static void main(String[] args) {
  new RemoveColumn();
  }

  public RemoveColumn(){
  JFrame frame = new JFrame("Remove a column from a JTable");
  JPanel panel = new JPanel();
  String data[][] {{"Vinod","MCA","Computer"},
   {
"Deepak","PGDCA","History"},
   {
"Ranjan","M.SC.","Biology"},
   {
"Radha","BCA","Computer"}};
  String col[] {"Name","Course","Subject"};  
  model = new DefaultTableModel(data, col);
  table = new JTable(model);
  JTableHeader header = table.getTableHeader();
  header.setBackground(Color.yellow);
  //remove column at second position
  Remove(table,1);
  JScrollPane pane = new JScrollPane(table);
  panel.add(pane);
  frame.add(panel);
  frame.setSize(500,150);
  frame.setUndecorated(true);
  frame.getRootPane().setWindowDecorationStyle(JRootPane.PLAIN_DIALOG);
  frame.setVisible(true);
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }

  public void Remove(JTable table, int col_index){
  TableColumn tcol = table.getColumnModel().getColumn(col_index);
  table.removeColumn(tcol);
  }
}

Download this example.

Output of program:

Before removing a column:

After removing a column:

Tutorials

  1. Display Image in Java
  2. Show Coordinates
  3. What is Java Swing?
  4. Creating a Frame
  5. Setting an Icon for a Frame in Java
  6. Show Dialog Box in Java
  7. Show message and confirm dialog box
  8. Show input dialog box
  9. Changing the Label of a JButton Component in Java
  10. Setting Multi-Line label on the Button
  11. Setting icon on the button in Java
  12. Making a Frame Non Resizable in Java
  13. Remove Minimize and Maximize Button of Frame in Java
  14. Removing the Title Bar of a Frame
  15. Setting Bounds for a maximized frame
  16. Iconifying and Maximizing a frame in Java
  17. Making a component drag gable in java
  18. Create a ToolBar in Java
  19. Animating Images in Java Application
  20. Drawing with Color in Java
  21. Drawing with Gradient Color in Java
  22. Adding a Rollover and Pressed Icon to a JButton Component in Java
  23. Creating Check Box in Java Swing
  24. Customize the Icon in a JCheckBox Component of Java Swing
  25. Create a JComboBox Component in Java
  26. Combo Box operation in Java Swing
  27. Create a JRadioButton Component in Java
  28. Selecting a Radio Button component in Java
  29. Create a JList Component in Java
  30. Setting Tool Tip Text for items in a JList Component
  31. Setting the Dimensions of an Item in a JList Component in Java
  32. Create a JSpinner Component in Java
  33. Show Time in JSpinner Component
  34. Disabling Keyboard Editing in a JSpinner Component
  35. Limiting the Values in a Number JSpinner Component
  36. JSlider Component of Java Swing
  37. Progress Bar in Java Swing
  38. Create menus and submenus in Java
  39. Crate a Popup Menu in Java
  40. Create a Popup Menus with Nested Menus in Java