Inserting Rows in a JTable
After making a table, you need to insert the data in a
table. This tutorial helps you in how to insert rows in a JTable to specified
locations or places according to its field. For inserting a row in JTable
component, you will require to insert it into its table model object.
Description of program:
This program creates a table by using the JTable
constructor that contains
3 rows and 2 columns. If you want to insert a data at any location by using
the insertRow() method that contains its position and data, you have to
define the position and data of the inserting data. All the data will
be add in this table model. This table model supports for inserting the data
in the row by using the DefaultTableModel.
Description of code:
DefaultTableModel(Object data[][], Object col[]):
This method creates a DefaultTableModel and initializes the table that will
pass in it. It takes the following arguments:
data: This
is the object that adds in a table.
col: This is a column object that
adds in the table.
insertRow(int row_index, Object data[]):
Above method is used to insert sa row at specified location. It takes the
following parameters:
row_index:
This is the index of row that to be added.
data: This is the data that have to
add in the table.
Here is the code of program:
import javax.swing.*;
import javax.swing.table.*;
public class InsertRows{
public static void main(String[] args) {
new InsertRows();
}
public InsertRows(){
JFrame frame = new JFrame("Inserting rows in the table!");
JPanel panel = new JPanel();
String data[][] = {{"Vinod","100"},{"Raju","200"},{"Ranju","300"}};
String col[] = {"Name","code"};
DefaultTableModel model = new DefaultTableModel(data,col);
JTable table = new JTable(model);
//Insert first position
model.insertRow(0,new Object[]{"Ranjan","50"});
//Insert 4 position
model.insertRow(3,new Object[]{"Amar","600"});
//Insert last position
model.insertRow(table.getRowCount(),new Object[]{"Sushil","600"});
panel.add(table);
frame.add(panel);
frame.setSize(300,300);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
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Download this example.
Output of program:
Before inserting
data in the JTable
After inserting data in the JTable
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