Question

我有如下的加载功能。

public void loadAppointment(String appointmentName)
    {
        int selectedRow = appointmentJTable.getSelectedRow();
        appointmentsJComboBox.setSelectedItem(tableModel.getValueAt(selectedRow, 0));
        String name = (String) tableModel.getValueAt(selectedRow, 1);
        nameJTextField.setText(name);
        rankJtextField.setText((String) tableModel.getValueAt(selectedRow, 2));
        notesJTextArea.setText((String) tableModel.getValueAt(selectedRow, 3));

        Appointment selectedAppointment = appointmentList.get(name);

        colorJpanel.setBackground(selectedAppointment.getColor());
        loadedData=getValueString();

    }

这里，'selectedAppointment'是一个局部变量。我想从同一个类中的另一个方法使用'selectedAppointment'的值。另一种方法是，

 private void PlaceJButtonActionPerformed(java.awt.event.ActionEvent evt)                                             
    {                                                 
        if (valid())
        {
            String gridReference = appointmentForesightGridSelecter.getGridDisplayString();
            gridReference = gridReference.replaceAll(" ", "");

            if(isLoadedDataChanged)
            {
                **replaceRow(selectedAppointment);**

            }
            createAppointment(gridReference);
            resetPanel();
        }
    }

由于局部变量只在方法中可见，我可以在'PlaceJButtonActionPerformed（）'中使用'selectedAppointment'的值。我是编程新手，如果有人能给我一个解释清楚的答案，那就更好了。

Answer 1

更改此

private void PlaceJButtonActionPerformed(java.awt.event.ActionEvent evt)

到这个

private void PlaceJButtonActionPerformed(java.awt.event.ActionEvent evt, Appointment appointment)

并在调用函数时传递该值。任何基础教程都应该向您展示。

Answer 2

我只想创建一个Appointment类型的全局变量，并使其等于你的局部变量。

`Appointment example;
 public void loadAppointment(String appointmentName)
 {    ...
      Appointment selectedAppointment = appointmentList.get(name);
      example = selectedAppointment;
      ...
 }
 `

然后在您的其他方法中使用该“示例”。

Answer 3

你有两个解决方案： 1：向'PlaceJButtonActionPerformed'添加一个参数，该参数将作为第二个参数'selectedAppointment' 2：或者将'selectedAppointment'声明为全局变量

如何将局部变量的值传递给另一个方法

3 个答案: