Jtable Row Sorter as Integer Value

I want to sort to the jtable by Integer value for 0. column.















I need to override "getColumnClass" method.















I overrided "getColumnClass" when define "tableMalzeme"

Java Code:

tableMalzeme.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
    {null, null, null, null},
    {null, null, null, null},
    {null, null, null, null},
    {null, null, null, null}
},
new String [] {
    "Title 1", "Title 2", "Title 3", "Title 4"
}
) {
    Class[] types = new Class [] {
        java.lang.Integer.class, java.lang.Object.class, java.lang.Object.class, java.lang.Object.class
};
boolean[] canEdit = new boolean [] {
    false, false, false, false
};
 
public Class getColumnClass(int columnIndex) {
    return types [columnIndex];
}
 
public boolean isCellEditable(int rowIndex, int columnIndex) {
    return canEdit [columnIndex];
}
});
tableMalzeme.setAutoCreateRowSorter(true);

but I can not override the "getColumnClass" after I set the model of jtable.

Java Code:

tableMalzeme.setModel(DbUtils.resultSetToTableModel(resultSet));