从Eclipse运行时不出现JavaJFrame窗口-JavaJFrameWindownotappearingwhenrunfromEclipse

A very simple problem. I try to run a very simple demo to created and display a Window Frame from Eclipse, and nothing happens. No errors, no window, the code runs to completion.

一个非常简单的问题。我尝试运行一个非常简单的演示来创建和显示Eclipse的Window Frame，但没有任何反应。没有错误，没有窗口，代码运行完成。

I added breakpoints and made sure the code runs as expected. The code is straight from Java tutorials (FrameDemo), I just renamed the package to fit where I placed it (other code from this package runs fine):

我添加了断点并确保代码按预期运行。代码直接来自Java教程（FrameDemo），我只是将包重命名为适合放置它的位置（此包中的其他代码运行正常）：

package ui;

import java.awt.*;
import javax.swing.*;

/* FrameDemo.java requires no other files. */
public class FrameDemo {
    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    private static void createAndShowGUI() {
        //Create and set up the window.
        JFrame frame = new JFrame("FrameDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JLabel emptyLabel = new JLabel("");
        emptyLabel.setPreferredSize(new Dimension(175, 100));
        frame.getContentPane().add(emptyLabel, BorderLayout.CENTER);

        //Display the window.
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

My setup (Kepler SR2):

我的设置（开普勒SR2）：

• eclipse.buildId=4.3.2.M20140221-1700
• eclipse.buildId = 4.3.2.M20140221-1700
• java.version=1.8.0_05
• java.version = 1.8.0_05
• java.vendor=Oracle Corporation
• java.vendor = Oracle Corporation
• BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US
• BootLoader常量：OS = macosx，ARCH = x86_64，WS = cocoa，NL = en_US
• Framework arguments: -product org.eclipse.epp.package.java.product -keyring /Users/steve/.eclipse_keyring -showlocation
• 框架参数：-product org.eclipse.epp.package.java.product -keyring /Users/steve/.eclipse_keyring -showlocation
• Command-line arguments: -os macosx -ws cocoa -arch x86_64 -product org.eclipse.epp.package.java.product -keyring /Users/steve/.eclipse_keyring -showlocation
• 命令行参数：-os macosx -ws cocoa -arch x86_64 -product org.eclipse.epp.package.java.product -keyring /Users/steve/.eclipse_keyring -showlocation

I also checked Configuration -> error logs; still nothing, no errors. I tried other similar demos, same results.

我还检查了配置 - >错误日志;仍然没有，没有错误。我尝试了其他类似的演示，结果相同。

Any help would be appreciated as I have been stuck on this for over a day.

任何帮助将不胜感激，因为我已被困在这一天超过一天。

1 个解决方案