我有一个带有 JTable 的 Swing 桌面应用程序。向 JTable 添加行时没有问题。我还可以顺利地排序(使用 JTable.autoCreateRowSorter
)然后删除行(使用 convertRowIndexToModel
)。
当我在 JTable 更新为仅显示包含查询的行的文本框中进行搜索时,我确实遇到了问题。当我在输入搜索词后尝试删除一行时,奇怪的事情开始发生:
public class EmployeeRecords extends javax.swing.JFrame {
ArrayList<Employee> employees = new ArrayList <Employee> ();
...
private void search(String query) {
//Create new table sorter for the table
TableRowSorter sorter = new TableRowSorter(employeeTable.getModel());
//Add row filter to the tablerowsorter (regex)
sorter.setRowFilter(RowFilter.regexFilter("(?i).*\\Q"+query+"\\E.*") );
//Apply the results to the output table
employeeTable.setRowSorter(sorter);
}
private void deleteButtonActionPerformed() {
//Get the index of the employee to delete
int employee = employeeTable.convertRowIndexToModel(
employeeTable.getSelectedRow());
employees.remove(employee); //This is where the IndexOutOfBoundsException occurs
refreshTable();
}
/**
* Refreshes the employee table. Uses the "employees" class array list to
* populate the rows.
*/
private void refreshTable() {
//Delete all the rows in the table
DefaultTableModel tbm = (DefaultTableModel) employeeTable.getModel();
for (int i=employeeTable.getRowCount()-1; i >= 0; i--) {
tbm.removeRow(i);
}
//For every employee
for (int i=0; i < employees.size(); i++) {
//Add the employee's data to a table row
tbm.addRow(employees.get(i).getData());
}
}
}
我会尝试删除一行,有时它会重复我想删除的行。其他时候我得到一个 IndexOutOfBoundsException,可能是因为 indeces 被弄乱了。
我不明白 someone with the same problem 的解决方案因为我真的不太了解 Swing Timers 之类的东西。
我还确保将行索引转换为模型为 suggested in this question.
关于如何解决这个问题有什么想法吗?
更新:这是正在发生的事情的基本屏幕截图。 搜索“a”,出现“a”和“aa”:
当我选择“a”并单击“删除选定项”时,结果如下:
现在,如果我尝试继续删除“aa”,那么我最终会得到一个 IndexOutOfBoundsException。
更新 2:这是员工类:
public class Employee {
//Class fields
Integer employeeIdNumber;
String firstName, lastName, startDate;
Double annualSalary;
/* Constructor for the Employee object */
public Employee(Integer employeeIdNumber, String firstName, String lastName,
Double annualSalary, String startDate) {
//Assign paramters to class fields
this.employeeIdNumber = employeeIdNumber;
this.firstName = firstName;
this.lastName = lastName;
this.annualSalary = annualSalary;
this.startDate = startDate;
}
/**
* Gets the data for the employee (ID, firstname, lastname, annual salary,
* and start date, in that order)
*
* @return an Object[] of the abovementioned employee data.
*/
public Object[] getData() {
return new Object[] {
employeeIdNumber,
firstName,
lastName,
annualSalary,
startDate
};
}
}
修复(感谢 camickr): 我更改了删除按钮的以下代码
private void deleteButtonActionPerformed(java.awt.event.ActionEvent evt) {
DefaultTableModel tbm = (DefaultTableModel) employeeTable.getModel();
//Get the index of the employee to delete
int employee = employeeTable.convertRowIndexToModel(
employeeTable.getSelectedRow());
//Delete the row directly
tbm.removeRow(employee);
//as well as delete the employee from the array
employees.remove(employee);
}
最佳答案
不确定我是否理解您的设计。您有一个 DefaultTableModel,还有一个包含您的员工的 ArrayList。
员工数据应存储在 TableModel 中。应该不需要重新创建 TableModel,因为您只需从模型中删除该行,表格就会自行重新绘制。
此外,作为使用 DefaultTableModel 时的注意事项,您只需使用以下命令删除所有行:
model.setRowCount(0);
关于java - 使用 RowFilter 删除 JTable 中的一行,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/15583427/