[GREENFOOT-170] If you make a World class that takes parameters, undescriptive exception is thrown

If you make a new World class which takes parameters then if Greenfoot tries to make an instance of that world the following exception is thrown:

{noformat} java.lang.InstantiationException: Test at java.lang.Class.newInstance0(Class.java:340) at java.lang.Class.newInstance(Class.java:308) at greenfoot.platforms.ide.WorldHandlerDelegateIDE.instantiateNewWorld(WorldHandlerDelegateIDE.java:400) at greenfoot.core.WorldHandler.instantiateNewWorld(WorldHandler.java:320) at greenfoot.gui.GreenfootFrame$3.run(GreenfootFrame.java:809) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160) at java.awt.EventDispatchThread.run(EventDispatchThread.java:121) {noformat}

I can understand why this is thrown, however perhaps it should be more descriptive. Most people would not realize that it is because of their parameters on their World class.

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Issue metadata

• Issue type: Bug
• Priority: Low
• Fix versions: 1.5.2