java - 如何在Java中使JTable可编辑

Question

我在 java 中使用 JTable，但它不允许我编辑单元格。

private final TableModel dataModel = new AbstractTableModel() {

        public int getColumnCount() { 
            return 5; 
        }

        public int getRowCount() { 
            return 10;
        }

        public Object getValueAt(int row, int col) { 
            return new Integer(row*col); 
        }
};

private final JTable table = new JTable(dataModel);

Answer 1

添加以下代码

 public boolean isCellEditable(int row, int col)
      { return true; }
 public void setValueAt(Object value, int row, int col) {
    rowData[row][col] = value;
    fireTableCellUpdated(row, col);
  }

你应该有一个数组来保存更改

Answer 2

isCellEditable()在匿名内部类中添加函数AbstractTableModel

public boolean isCellEditable(int row, int col) { 
    return true; 
}

Answer 3

尝试

 private final TableModel dataModel = new AbstractTableModel() {

        public int getColumnCount() { 
            return 5; 
        }

        public int getRowCount() { 
            return 10;
        }

        public Object getValueAt(int row, int col) { 
            return new Integer(row*col); 
        }

        public boolean isCellEditable(int row, int col) {
                    return true;
                }
};

Answer 4

将 isCellEditable() 添加到您希望它们可编辑的行和列中，例如，如果您不希望某些列（如 ID）可编辑，则返回 false。请记住，您需要将编辑数据保存在某个位置

  public boolean isCellEditable(int row, int col) { 
       return true;  // or false for none editable columns
    }
 public void setValueAt(Object value, int row, int col) {
  rowData[row][col] = value; // save edits some where
  fireTableCellUpdated(row, col); // informe any object about changes
}