CODEWITHSUNDEEP
javaarraylistjtable
EoR
EoR

Reputation: 1

Java - Arraylist contents to display in Jtable

I am working on a project and I am stuck on this area. I am reading text from a file and I am saving it into an arraylist. the problem is the content from the file appears in one line of text in the jtable but i want each line to be displayed in rows. I am passing the data from another class and I know this is working because I can see the contents printed out in the console row after row . I have tried a few different ways but I've run out of ideas. Any help appreciated.

Below is the code I have wrote.

for (String item : helper.getItems() )
{       
    System.out.println(item);
    storage.add(item);
}

    JTable t1 = new JTable();
    t1.setModel(new DefaultTableModel(
            new Object[][]{
                    {storage.toString()}    
            },
            new String[]{
                    "Tool Equipment"
            }

    ));

Upvotes: 0

Views: 287

Answers (2)

Rhynomac11
Rhynomac11

Reputation: 1

The best way to add items to a JTable using the DefaultTableModel object is to utilize the .addRow method of the DefaulTableModel. You'll need to parse the storage string to deliminate the values you want placed into each row/col

For Example:

DefaultTableModel model=new DefaultTableModel();
// parsing of the storage obj, to get individual values for each col/row
// depending on the structure of storage a looping construct would be beneficial here
String col1= storage.substring(startindex, endindex);
String col2=storage.substring(startindex, endindex);
//add items to the model in a new row
model.addRow(new Object[] {col1, col2});
// if you used a loop to parse the data in storage, end it here
// add model to the table
t1.setModel(model);

Upvotes: 0

Алексей
Алексей

Reputation: 1847

storage.toString() will give you string representation of your ArrayList. What you want is probably List#toArray

Upvotes: 1

Related Questions