我是java的菜鸟，我遇到了一个问题...我需要做的是运行我的shipmentApp程序，它显示我的EnterShipInfo框架，其中有几个文本字段用于输入数据和一个输入按钮，当clicked将输入的数据传递给我的ShipmentFrame。最初当框架弹出时，应该有三个标签，只是说＆＃34;标签＆＃34;在它们和显示按钮中，当您单击显示按钮时，文本字段中的数据会弹出三个标签以及其他一些单词来制作短语。
// ShipmentFrame代码从此处开始
private static final long serialVersionUID = 1L;
private Label headerLbl = null;
private Button displayButton = null;
private Button Exit = null;
private Label shipLbl = null;
private Label empLbl = null;
private Label dateTimeLbl = null;
private Shipment s;
private Shipment sf;
public ShipmentFrame(Shipment ship){
super();
this.s = ship;
initialize();
s = ship;
}
public void actionPerformed(ActionEvent e) {
shipLbl.setText("Shipment number " + s.getShipmentNum() +
" was received from " + s.getSupplierName());
empLbl.setText("By employee number " + s.getEmployeeNum());
dateTimeLbl.setText("On " + s.getRevDate() + " at " + s.getRevTime());
}
//这是来自EnterShipInfo的代码
private static final long serialVersionUID = 1L;
private Label headerLbl = null;
private Button displayButton = null;
private Button Exit = null;
private Label dateLbl = null;
private Label timeLbl = null;
private Label suplLbl = null;
private Shipment s;
private Label shipNumLbl = null;
private Label empNumLbl = null;
private TextField empNumTF = null;
private TextField shipNumTF = null;
private TextField dateTF = null;
private TextField timeTF = null;
private TextField supplTF = null;
Shipment ship = new Shipment (" ", " ", " ", " ", " ");
// @jve:decl-index=0:
public EnterShipInfo(){
super();
// this.s = ship;
initialize();
}
//这是错误的部分
public void actionPerformed(ActionEvent e) {
String employeeNum = empNumTF.getText();
String shipmentNum = shipNumTF.getText();
String revDate = dateTF.getText();
String revTime = timeTF.getText();
String supplierName = supplTF.getText();
ShipmentFrame sf = new ShipmentFrame(null);
}
//以下是我正在寻找的......也许有人知道更有效的方法来实现这个目标
public void actionPerformed(ActionEvent e) {
ship.setEmployeeNum(empNumTF.getText());
ship.setShipmentNum( shipNumTF.getText());
ship.setRevDate( dateTF.getText());
ship.setRevTime(timeTF.getText());
ship.setSupplierName( supplTF.getText());
ShipmentFrame sf = new ShipmentFrame(ship);
}
答案 0 :(得分：0)
修改
以下是在JFrame中显示Component的一般过程：
1 - 设置JFrame（布局，边框等）：
JFrame frame = new JFrame("Frame Title");
JPanel contentPane = ((JPanel) frame.getContentPane());
contentPane.setLayout(new GridLayout(4,1)); //use whatever kind of layout you need
contentPane.setBorder(new EmptyBorder(10,10,10,10)); //use whatever kind of border you need
2 - 初始化你的组件（在这种情况下，两个JTextFields和一个JButton）：
JTextField empNumTF = new JTextField("Initial text in field");
JTextField shipNumTF = new JTextField("Initial text in field");
JButton displayButton = new JButton("Display");
3 - 将您的组件添加到JFrame的contentPane：
contentPane.add(empNumTF);
contentPane.add(shipNumTF);
contentPane.add(displayButton);
4 - 打包并显示：
frame.pack();
frame.setVisible(true);
然后，您的JFrame应与这些组件一起显示。
<强> ADDED
现在，如果我们想要操纵用户输入的文本字段，我们需要为按钮添加一个动作监听器。要做到这一点：
1 - 将一个类设为动作侦听器（如果需要，可以使用与创建JButton相同的类），声明它为implements ActionListener：
public class EnterShipInfo implements ActionListener{
2 - 向按钮添加一个动作监听对象，如下所示：
displayButton.addActionListener(this);
//using "this" means that the object this JButton was created in is the action listener.
3 - 向ActionListener添加actionPerformed()方法（因为您似乎已经正确完成）：
public void actionPerformed(ActionEvent e){
//insert code to execute whenever your button is clicked.
}
所以现在，特别是你，在你的actionPerformed()方法中，你可能想要处理这样的事情：
public void actionPerformed(ActionEvent e){
if (e.getActionCommand().equals("Display")){ //"Display" is the text on the JButton
String employeeNum = empNumTF.getText();
String shipmentNum = shipNumTF.getText();
String revDate = dateTF.getText(); //These text fields
String revTime = timeTF.getText(); //not coded in
String supplierName = supplTF.getText(); //my example
ShipmentFrame sf = new ShipmentFrame(new Shipment(shipmentNum, supplierName, revDate, revTime, employeeNum)); //I'm just guessing at the order these come in
sf.setVisible(true);
}
}
您可能需要查看一些关键文档：