为Java应用程序创建启动画面的最佳方法？

Question

I have a Java application that is designed to run on both Windows and OSX. In some cases it might take a while to load because it basically looks at the directories inside the main directories (so two levels of directories). When it is done the main GUI will be shown, unless there are any errors, in which case a JOptionPane will appear.

I would like to show a splash screen until either of the GUI or a message is displayed, however I'm not sure what the best way to do this is. Also, I'm not sure how to create the splash screen to start with - is there a program that people use?

Answer 1

If you are talking about a Swing application, then there is a Java Tutorial on this subject:

• http://docs.oracle.com/javase/tutorial/uiswing/misc/splashscreen.html

For JNLP launched Swing applications, this blog covers changing the JNLP splash screen:

• https://blogs.oracle.com/thejavatutorials/entry/changing_the_java_web_start

I couldn't find a tutorial for SWT applications, but here are a couple of examples:

• https://joinup.ec.europa.eu/svn/peppol/dev/vcd/VCDBuilder/vcd-bootstrap/src/main/java/eu/peppol/vcd/bootstrap/SplashScreen.java

• http://git.eclipse.org/c/platform/eclipse.platform.swt.git/tree/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet104.java

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If you are asking about how to create the graphics / images for your splash screen, there are many tools out there for creating images, and recommending one would be off-topic for Stack Overflow.

Answer 2

在应用程序启动时显示一个带有图像的JOptionPane，它是你的启动屏幕，同时触发一个线程来为你做负载，当它完成后用启动画面隐藏窗格并显示你的主UI