CODEWITHSUNDEEP
javaswingmultidimensional-arrayjtable
user2478240
user2478240

Reputation: 379

Adding items to array for JTable

I have a table which has only field names and no data, I want to enter data from inputs by the user, how do I do that?

My actual program is too long, so this is a mini program i wrote to post here.

Example of things i want to add into the table is this: {"men's clothings","RM 5",input,total}

input is from the first button, total is from my setter getter file in my actual program

I wanted to use a List but it seems that it is uncompatible with my Object[][] order.

What i want to achieve is generating an order list after user choosing the items from the buttons.

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

    class test implements ActionListener
    {
private Object[][]order={   };  // I need to add data here in order to put 
                                         //in the JTable

private JFrame f;               // for 1st frame with the buttons
private JTable table;
private JScrollPane pane;
private JButton button1;    
private JFrame f2;              //pop up window after button2 
private JButton button2;
private String input;           //input when press button1

    public test()
    {

    button1=new JButton("press here first");
    button2=new JButton("press here after above");

    //first frame config

    f=new JFrame();
    f.setSize(500,500);
    f.setVisible(true);
    f.setLayout(new GridLayout(2,0));
    f.add(button1);
    f.add(button2);


    button1.addActionListener(this);
    button2.addActionListener(this);
     }

    public static void main(String args[])
{
test lo=new test(); 
}


public void actionPerformed(ActionEvent e)
    {

  if(e.getSource()==button1)    // for the first button
        {
    input=JOptionPane.showInputDialog(null,"how many do you want?");
            //user input on the quantity
        }

  if(e.getSource()==button2)
     {
    window2();
     }

    } 


public JFrame window2()         //second window config
     {
    String[] title={"item","Price","Qty","total"};
    table=new JTable(order,title);
    pane=new JScrollPane(table);

    f2=new JFrame();
    f2.setSize(500,500);
    f2.setVisible(true);
    f2.setLayout(new FlowLayout());
    f2.add(pane);
    f2.pack();

    return f2;
     }

    }

Upvotes: 0

Views: 2258

Answers (1)

camickr
camickr

Reputation: 324197

You should be creating your table as follows:

DefaultTableModel model = new DefaultTableModel(title, 0);
JTable table = new JTable( model );

This will create a table with just the heading and 0 rows of data.

Then when you want to add a new row of data you would use:

model.addRow(...);

You can add data to the DefaultTableModel as a Vector or an Array.

If you want to use a List then you need to use a custom TableModel model. You can check out the List Table Model.

Upvotes: 3

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