How to sort column number in jtable

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Java

I want to sort column when I click on table header, all row are true except the first column is integer number. The result I received like:
1
10
11
2
22
3
31
....
I have try getColumnClass() but it didn't work.
My code here:

model = new DefaultTableModel(vData, vTitle)
            {
                Class[] types = {Integer.class,String.class,String.class,String.class,String.class,String.class,String.class,String.class,String.class,String.class};
                @Override
                public Class getColumnClass(int columnIndex) {
                    return this.types[columnIndex];
                }

                @Override
                public boolean isCellEditable(int row, int column) {
                    return false;
                }
            };

What I have tried:

I tried a lot but it still fail. Please help me!!!