How to get the whole row of a JTable to save it into another table?

Question

I am trying to validate that when the column step is equal to 2 the row is copied to another JTable.

But the jtable_step2 I have not initialized correctly, that's why it returns the error:

jtable_step2.setValueAt(jtable.getValueAt(i, j), row, j); Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0 >= 0

How do I copy the same columns and rows that satisfy the condition?

Java code:

import javax.swing.JTable; public class TestJTableCopy { public static void main(String args[]){ String data[][]={ {"1","/LOCAL/USER/LOCAL", "20220421", "1"}, {"1","/LOACL/USER/LOCAL", "20220421", "2"}, {"1","/LOACL/USER/LOCAL", "20220422", "2"} }; String columns[] = {"LINE", "SOURCE", "DATE", "STEP"}; final JTable jtable = new JTable(data,columns); JTable jtable_step2 = new JTable(); //jtable2.addColumn(columns); int row = 0; for (int i = 0; i < jtable.getRowCount(); i++) { //STEP == 2 if (jtable.getValueAt(i, 3).equals("2")) { for(int j = 0; j < jtable.getColumnCount(); j++) { jtable_step2.setValueAt(jtable.getValueAt(i, j), row, j); } row++; } } for (int i = 0; i < jtable_step2.getRowCount(); i++) { for (int j = 0; j < jtable_step2.getColumnCount(); j++) { System.out.println(i + " " + j + " " + jtable_step2.getValueAt(i, j)); } } } }

camickr · Accepted Answer · 2022-05-06 17:09:32Z

jtable_step2.setValueAt(jtable.getValueAt(i, j), row, j);

You can't use the setValueAt(...) method because the row doesn't exist in the second table. You need to add a new row of data to the model of the table.

You do this by:

Creating a Vector, lets say "row"
Iterate through all the columns of the row you want to copy and add each item to the table
in the second table you use jtable_step2.addRow( row ) to add a new row of data to the model of the table.

Collectives™ on Stack Overflow

How to get the whole row of a JTable to save it into another table?

1 Answer 1

Comments

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Related