小编rai*_*der的帖子

下面的方法扩展了一个JFrame,但是我需要一个swing文本框来接收double值并将它们存储在一个变量中.必须将文本框添加到容器中.

    public class myClass extends JFrame{
        Container container;
        container = getContentPane();

        //Item label
        JLabel labelText = new JLabel();        
       ...
        labelText.setText ("Item:");        
        container.add( labelText );

        //Item name: Textbox
        //code to make a textbox, add it to the container, and store the value in a                      variable goes here

我需要将以下数组放入JComboBox,然后在单击"提交"按钮时存储所选值.

    listOfDepartments = new String[5];
    listOfDepartments[0] = "Mens Clothing";
    listOfDepartments[1] = "Womens Clothing";
    listOfDepartments[2] = "Childrens Clothing";
    listOfDepartments[3] = "Electronics";
    listOfDepartments[4] = "Toys";

    //Department: ComboBox that loads from array

    // Store values
    JButton buttonSubmit = new JButton();
    buttonSubmit.setText("Submit");
    container.add(buttonSubmit);

     buttonSubmit.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent evt) {
        //store value from combobox in a variable
        }
    });