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Java 小程序 - 未初始化并出现 NullPointerException 错误

[英]Java applet - Does not initialize and has NullPointerException errors

原文 2015-06-26 13:28:06 0 1 java/ applet

I gathered class files from a website for a java applet.我从一个网站收集了一个 Java 小程序的类文件。 I decompiled the files to get java files.我反编译了这些文件以获得java文件。 I placed them in Eclipse.我把它们放在 Eclipse 中。 When I " run as applet " it doesn't initialize and I get this error :当我“作为小程序运行”时，它不会初始化，并且出现此错误：

java.lang.NullPointerException at sun.misc.FloatingDecimal.readJavaFormatString(Unknown Source) at sun.misc.FloatingDecimal.parseDouble(Unknown Source) at java.lang.Double.parseDouble(Unknown Source) at java.lang.Double.valueOf(Unknown Source) at SampleDistApplet.start(SampleDistApplet.java:44) at sun.applet.AppletPanel.run(Unknown Source) at java.lang.Thread.run(Unknown Source) java.lang.NullPointerException at sun.misc.FloatingDecimal.readJavaFormatString(Unknown Source) at sun.misc.FloatingDecimal.parseDouble(Unknown Source) at java.lang.Double.parseDouble(Unknown Source) at java.lang.Double.valueOf( Unknown Source) at SampleDistApplet.start(SampleDistApplet.java:44) at sun.applet.AppletPanel.run(Unknown Source) at java.lang.Thread.run(Unknown Source)

Can anyone help me with this issue?谁能帮我解决这个问题？

1 个解决方案

Copy and paste of applet class files do'nt work properly after decompiling in my view.在我看来，反编译后小程序类文件的复制和粘贴无法正常工作。 Instead you create own applet files then run it.相反，您创建自己的小程序文件然后运行它。 Then you also get some practice about applet applications.然后，您还将获得一些有关小程序应用程序的练习。