[英]Passing a varable from a JFrame to another
I want to pass a variable from a JFrame to another when I'm pressing the btnCalculeaza
button. 我想在按下
btnCalculeaza
按钮时将变量从JFrame传递到另一个变量。
Here is my code: 这是我的代码:
JButton btnCalculeaza = new JButton("Calculeaza");
btnCalculeaza.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
int algad = Integer.parseInt(textField.getText());
int analiza = Integer.parseInt(textField_1.getText());
int be = Integer.parseInt(textField_2.getText());
int depcom = Integer.parseInt(textField_3.getText());
int engleza1 = Integer.parseInt(textField_4.getText());
int engleza2= Integer.parseInt(textField_5.getText());
int fizica= Integer.parseInt(textField_6.getText());
int grafica= Integer.parseInt(textField_7.getText());
int informatica= Integer.parseInt(textField_8.getText());
int matematici= Integer.parseInt(textField_9.getText());
int programare1= Integer.parseInt(textField_10.getText());
int programare2= Integer.parseInt(textField_11.getText());
int tpsm= Integer.parseInt(textField_12.getText());
double nota1;
nota1=(7*algad+analiza*6.0+7*be+3*depcom+2*engleza1+2*engleza2+fizica*7+grafica*3+informatica*4+matematici*6+programare1*5+programare2*4+tpsm*4)/60;
System.out.println(nota1);
new Anul2(nota1).setVisible(true);
Anul2 anul2 =new Anul2();
anul2.setVisible(true);
frame.dispose();
}
});
And the second JFrame
: 第二个
JFrame
:
public class Anul2 extends JFrame {
private double nota1;
public Anul2(double nota1) {
this.nota1 = nota1;
}
private static final long serialVersionUID = 1L;
private JPanel contentPane;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Anul2 frame = new Anul2();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Anul2() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 527, 407);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JLabel lblMediaGeneralaPana = new JLabel("Media generala pana acum:");
lblMediaGeneralaPana.setBounds(12, 331, 160, 16);
contentPane.add(lblMediaGeneralaPana);
JLabel lblNewLabel = new JLabel("");
lblNewLabel.setText(Double.toString(nota1));
lblNewLabel.setBounds(171, 331, 56, 16);
contentPane.add(lblNewLabel);
}
}
I would like to pass the nota1
variable to the second JFrame
(called Anul2
) and then I want to convert it to a JLabel
我想将
nota1
变量传递给第二个JFrame
(称为Anul2
),然后将其转换为JLabel
Two ways, 两种方式
Your real problem is that your mixing up responsibilities in your code. 您真正的问题是您在代码中混淆了职责 。
You should fully separate your data processing form your UI stuff. 您应该将数据处理与UI内容完全分开。
Meaning: you have a local variable 含义:您有一个局部变量
nota1=(7*algad+analiza*6.0+7*be+3*depcom+2*engleza1+2*engleza2+fizica*7+grafica*3+informatica*4+matematici*6+programare1*5+programare2*4+tpsm*4)/60;
and its extremely complicated computation within an action listener. 以及动作侦听器中极其复杂的计算。 Such things don't belong there.
这样的东西不属于那里。
Instead, you should have a distinct class that only holds all the parameters required for that computation. 相反,您应该有一个单独的类,该类仅包含该计算所需的所有参数。 And then, that class has probably a method
computeNota()
. 然后,该类可能有一个方法
computeNota()
。
Now: in your action listener, you create an object of that class, and then you could pass on that object to new JFRame for example. 现在:在动作侦听器中,创建该类的对象,然后可以将该对象传递给新的JFRame。
Decouple the processing of your data from showing it to the user! 将数据处理与显示给用户脱钩!
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.