java - JFrame 未执行! (Eclipse 编辑器)

Question

当我按下运行按钮时，我的 JFrame 没有执行，甚至没有显示。我确信我的代码是正确的(请检查)，我猜这可能是 Eclipse Bug。我们将不胜感激!

Eclipse 版本:Neon

操作系统:Ubuntu Linux 16.04 LTS

代码:

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;

public class CreateServer {

    public static JFrame start= new JFrame("TRDServerCreator");

    public static void main(String[] args) 
    {
       CreateServer.startwin();
    }

    public static void startwin ()
    {
        start.setSize(500,500);
        start.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        start.setLocationRelativeTo(null);
        start.setResizable(false);

        JPanel cont= new JPanel();
        start.add(cont);

        JLabel n1=new JLabel("Thank you for choosing TRD Server Creator");
        n1.setVisible(true);
        JLabel n2=new JLabel("Pls select the Verison of your New Server");
        n2.setVisible(true);
        cont.add(n1,n2);
    }

}

Answer 1

只需添加start.setVisible(true);

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;

public class CreateServer {

    public static JFrame start= new JFrame("TRDServerCreator");

    public static void main(String[] args) 
    {
       CreateServer.startwin();
    }

    public static void startwin ()
    {
        start.setSize(500,500);
        start.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        start.setLocationRelativeTo(null);
        start.setResizable(false);

        JPanel cont= new JPanel();
        start.add(cont);

        JLabel n1=new JLabel("Thank you for choosing TRD Server Creator");
        n1.setVisible(true);
        JLabel n2=new JLabel("Pls select the Verison of your New Server");
        n2.setVisible(true);
        cont.add(n1,n2);

        start.setVisible(true);

    }
}