我刚刚开始使用GUI编程。我正在尝试自定义框架,但到目前为止,当我将它添加到gameView中时,没有任何东西出现,比如按钮或cat gif,所以在我运行它之后,我得到的只是框架窗口。到目前为止,我的代码如下:
package experiment10;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class mainFrame extends JFrame
{
public static int MAX = 500; // maximum number to guess
private JButton submitBtn; // Submit button
private JButton clearBtn; // Clear Input button
private JTextField inputNumber; //input guessed number
private int magicNumber; //randomly generated number
public static void main(String[] arg) {
//Show frame
JFrame frame = new JFrame();
frame.setVisible(true);
}
public mainFrame() {
setSize(400, 400);
setResizable (false);
setTitle("Let's Play Hi Lo");
setDefaultCloseOperation(EXIT_ON_CLOSE);
magicNumber = (int)(Math.random()*MAX);
Container gameView = getContentPane();
gameView.setLayout(new FlowLayout());
//Customizations
submitBtn = new JButton("Submit"); //create submit button
clearBtn = new JButton("Clear"); //create clear button
gameView.add(submitBtn); //adds submit button
gameView.add(clearBtn); //adds clear button
JLabel imageLabel = new JLabel(new ImageIcon("cat.gif")); //creates image
gameView.add(imageLabel); //adds image
JLabel textLabel = new JLabel("Please enter your guess"); //creates JLabel
gameView.add(textLabel); //adds JLabel
JTextField input = new JTextField(); //creates JTextField
gameView.add(input); //adds JTextField
}
}任何帮助/提示都是非常感谢的。谢谢。
发布于 2020-04-17 11:11:15
您需要从main方法调用mainFrame():
mainFrame frame = new mainFrame();还可以从main中删除以下代码:
JFrame frame = new JFrame();
frame.setVisible(true);然后需要将setVisible(true);添加到mainFrame()构造函数中。
https://stackoverflow.com/questions/61263468
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