Wie erstellt PrintWriter manchmal eine Datei, aber erstellt sie nicht eine andere Datei?

Question

Manchmal erstellt PrintWriter die Datei automatisch für mich. Kann es die ganze Zeit funktionieren? Ich habe keine Ahnung, warum es nicht jedes Mal funktioniert. Hier ist mein Code.

String fileName = date + "-" + title; 

    //Write to file 
    try(PrintWriter writer = new PrintWriter(fileName, "UTF-8")) 
    { 
     writer.println(articleURL); 
     writer.println(body + "\n"); 
     for(String link: links) 
     { 
      writer.println(link + ","); 
     } 
     writer.close(); 
    } 
    catch(Exception e) 
    { 
     e.printStackTrace(); 
    } 

Dies ist der Fehler, den ich bekommen, wenn eine bestimmte Datei

java.io.FileNotFoundException: 20160423-California's next senator could be a Latina. Will her past mistakes get in the way? - LA Times (The filename, directory name, or volume label syntax is incorrect) 
at java.io.FileOutputStream.open0(Native Method) 
at java.io.FileOutputStream.open(FileOutputStream.java:270) 
at java.io.FileOutputStream.<init>(FileOutputStream.java:213) 
at java.io.FileOutputStream.<init>(FileOutputStream.java:162) 
at java.io.PrintWriter.<init>(PrintWriter.java:192) 
at java.io.PrintWriter.<init>(PrintWriter.java:232) 
at TextFromArticleCreator.writeToFile(TextFromArticleCreator.java:48) 
at NewsCrawler.write(NewsCrawler.java:90) 
at NewsCrawler.Scrape(NewsCrawler.java:56) 
at GUI.lambda$start$0(GUI.java:35) 
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86) 
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238) 
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191) 
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74) 
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49) 
at javafx.event.Event.fireEvent(Event.java:198) 
at javafx.scene.Node.fireEvent(Node.java:8411) 
at javafx.scene.control.Button.fire(Button.java:185) 
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182) 
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96) 
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89) 
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218) 
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80) 
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238) 
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191) 
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56) 
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114) 
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74) 
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54) 
at javafx.event.Event.fireEvent(Event.java:198) 
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757) 
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485) 
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762) 
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494) 
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:352) 
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:275) 
at java.security.AccessController.doPrivileged(Native Method) 
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$355(GlassViewEventHandler.java:388) 
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389) 
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:387) 
at com.sun.glass.ui.View.handleMouseEvent(View.java:555) 
at com.sun.glass.ui.View.notifyMouse(View.java:937) 
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) 
at com.sun.glass.ui.win.WinApplication.lambda$null$149(WinApplication.java:191) 
at java.lang.Thread.run(Thread.java:745) 

Answer 1

Der Dateiname, Verzeichnisname oder Datenträgerbezeichnung zum Download versuchen, ist falsch

Das heißt, Sie kann keinen ' oder ? in einem Dateinamen haben.

Hinweis: Ich habe versucht, ein Duplikat in den fast 2000 Treffern für diesen Fehler auf Stackoverflow zu finden, konnte aber keine exakte Übereinstimmung finden.