Package table model to display in a JTable.

PackageTableModel.kt

class PackageTableModel(
    private val packages: MutableList<String>
) : AbstractTableModel() {
    override fun getRowCount(): Int {
        return packages.size
    }

    override fun getColumnCount(): Int {
        return 1 //only 1 column
    }

    override fun getValueAt(rowIndex: Int, columnIndex: Int): Any {
        return packages.elementAtOrElse(rowIndex) { "" }
    }

    override fun getColumnName(column: Int): String {
        return "Packages"
    }

    override fun isCellEditable(rowIndex: Int, columnIndex: Int): Boolean {
        return true
    }

    override fun setValueAt(aValue: Any?, rowIndex: Int, columnIndex: Int) {
        packages[rowIndex] = aValue.toString()
    }

    fun addRow(value: String, rowIndex: Int) {
        packages.add(rowIndex, value)
        setValueAt(value, rowIndex, 1)
    }

    fun removeRow(firstRow: Int, lastRow: Int, rowIndex: Int) {
        packages.removeAt(rowIndex)
        fireTableRowsDeleted(firstRow, lastRow)
    }

    fun updateRow(rowIndex: Int, value: String) {
        setValueAt(value, rowIndex, 1)
    }
}