我假设(或者这实际上是原因)，您实际上遇到了以下行的问题:

I am assuming(or this is actually the reason), You are actually having the issue with the following line:

String oldStatus = String.valueOf(table.getValueAt(rowInModel, 3));

JTable.getValueAt(row, col)方法将通过将单元格(row, col)的值转换为 model-index 来返回单元格(row, col)的值，其中(row, col)是 view-index .让我们来看看JTable类的源代码:

JTable.getValueAt(row, col) method will return the value of the cell (row, col) by converting them to model-index where (row, col) is view-index. Let use look into the source of JTable class:

public Object getValueAt(int row, int column) {
        return getModel().getValueAt(convertRowIndexToModel(row),
                                     convertColumnIndexToModel(column));
    }

因此，您传递给此函数的(row, col)应该属于视图而不是模型.在您的上下文中为rowInTable.从table.convertRowIndexToModel(rowInTable)获得的rowInModel已经是模型索引.通过调用JTable.getValueAt(rowInModel, 3)，您实际上是在尝试将模型索引转换为另一个模型索引，从而导致计算错误.

So your passed (row, col) to this function should belongs to the view, instead of model. In your context which is rowInTable. The rowInModel is already a model index as you got it from table.convertRowIndexToModel(rowInTable). By calling JTable.getValueAt(rowInModel, 3) you are essentially trying to convert a model index to another model index resulting in computational error.