title: IDEA 14. Decompile my own classes(from output directory)
body: <p>I want to look at the code generated from my own sources but it seems that IDEA doesn't decompile them using new fernflower plugin using <em>IntelliJ API Decompiler</em> instead.</p>
  
  <p>At least I have header comment</p>
  
  <pre><code>// IntelliJ API Decompiler stub source generated from a class file
  // Implementation of methods is not available
  </code></pre>
  
  <p>and methods like that: <code>public void update() { /* compiled code */ }</code></p>
  
  <p>At the same time, in external library(for example JDK), i see normal header and decompiled code.</p>
  
  <pre><code>// Source code recreated from a .class file by IntelliJ IDEA
  // (powered by Fernflower decompiler)
  </code></pre>
  
  <p>I can make decompiler works, if I compile code to jar and add it to some module, but it's doesn't look like a normal solution.</p>
  
  <p>Can I make IDEA decompile any class file using fernflower?</p>
  
  <p><strong>EDIT:</strong> While opening file I get an exception in IDEA log file. See snippet.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="true">
  <div class="snippet-code snippet-currently-hidden">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;pre&gt;
  2015-02-13 19:16:29,991 [119281666]   WARN - l.compiled.ClassFileDecompiler - decompiler: class org.jetbrains.java.decompiler.IdeaDecompiler
  com.intellij.psi.compiled.ClassFileDecompilers$Light$CannotDecompileException: org.jetbrains.java.decompiler.IdeaLogger$InternalException: Method &lt;init&gt; (Ljava/util/HashMap;)V couldn't be decompiled.
   at org.jetbrains.java.decompiler.IdeaDecompiler.getText(IdeaDecompiler.java:162)
   at com.intellij.psi.impl.compiled.ClassFileDecompiler.decompile(ClassFileDecompiler.java:57)
   at com.intellij.openapi.fileEditor.impl.LoadTextUtil.loadText(LoadTextUtil.java:364)
   at com.intellij.openapi.fileEditor.impl.FileDocumentManagerImpl.getDocument(FileDocumentManagerImpl.java:167)
   at com.intellij.openapi.fileEditor.impl.text.PsiAwareTextEditorProvider.createEditorAsync(PsiAwareTextEditorProvider.java:58)
   at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openFileImpl4(FileEditorManagerImpl.java:778)
   at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openFileImpl3(FileEditorManagerImpl.java:736)
   at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl$8.run(FileEditorManagerImpl.java:716)
   at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:117)
   at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:99)
   at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:85)
   at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openFileImpl2(FileEditorManagerImpl.java:713)
   at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openFileWithProviders(FileEditorManagerImpl.java:654)
   at com.intellij.openapi.fileEditor.ex.FileEditorManagerEx.openFile(FileEditorManagerEx.java:146)
   at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl$14.run(FileEditorManagerImpl.java:1071)
   at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:124)
   at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:99)
   at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:85)
   at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openEditor(FileEditorManagerImpl.java:1067)
   at com.intellij.openapi.fileEditor.OpenFileDescriptor.navigateInAnyFileEditor(OpenFileDescriptor.java:152)
   at com.intellij.openapi.fileEditor.OpenFileDescriptor.navigateInEditor(OpenFileDescriptor.java:138)
   at com.intellij.openapi.fileEditor.OpenFileDescriptor.navigateInEditorOrNativeApp(OpenFileDescriptor.java:134)
   at com.intellij.openapi.fileEditor.OpenFileDescriptor.navigate(OpenFileDescriptor.java:121)
   at com.intellij.psi.impl.PsiElementBase.navigate(PsiElementBase.java:197)
   at com.intellij.codeInsight.navigation.NavigationUtil.openFileWithPsiElement(NavigationUtil.java:167)
   at com.intellij.ide.projectView.impl.nodes.AbstractPsiBasedNode.navigate(AbstractPsiBasedNode.java:207)
   at com.intellij.ide.projectView.impl.nodes.AbstractPsiBasedNode.navigate(AbstractPsiBasedNode.java:217)
   at com.intellij.ide.projectView.impl.nodes.PsiFileNode.navigate(PsiFileNode.java:132)
   at com.intellij.util.OpenSourceUtil.navigate(OpenSourceUtil.java:53)
   at com.intellij.util.OpenSourceUtil.openSourcesFrom(OpenSourceUtil.java:31)
   at com.intellij.util.EditSourceOnDoubleClickHandler$TreeMouseListener.processDoubleClick(EditSourceOnDoubleClickHandler.java:130)
   at com.intellij.util.EditSourceOnDoubleClickHandler$TreeMouseListener.onDoubleClick(EditSourceOnDoubleClickHandler.java:122)
   at com.intellij.ui.DoubleClickListener.onClick(DoubleClickListener.java:30)
   at com.intellij.ui.ClickListener$1.mouseReleased(ClickListener.java:73)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:273)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
   at java.awt.Component.processMouseEvent(Component.java:6414)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3275)
   at com.intellij.ui.treeStructure.Tree.processMouseEvent(Tree.java:421)
   at com.intellij.ide.dnd.aware.DnDAwareTree.processMouseEvent(DnDAwareTree.java:53)
   at java.awt.Component.processEvent(Component.java:6179)
   at java.awt.Container.processEvent(Container.java:2084)
   at java.awt.Component.dispatchEventImpl(Component.java:4776)
   at java.awt.Container.dispatchEventImpl(Container.java:2142)
   at java.awt.Component.dispatchEvent(Component.java:4604)
   at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4618)
   at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4279)
   at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4209)
   at java.awt.Container.dispatchEventImpl(Container.java:2128)
   at java.awt.Window.dispatchEventImpl(Window.java:2492)
   at java.awt.Component.dispatchEvent(Component.java:4604)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:717)
   at java.awt.EventQueue.access$400(EventQueue.java:82)
   at java.awt.EventQueue$2.run(EventQueue.java:676)
   at java.awt.EventQueue$2.run(EventQueue.java:674)
   at java.security.AccessController.doPrivileged(Native Method)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:690)
   at java.awt.EventQueue$3.run(EventQueue.java:688)
   at java.security.AccessController.doPrivileged(Native Method)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:687)
   at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:748)
   at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:573)
   at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:384)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
  Caused by: org.jetbrains.java.decompiler.IdeaLogger$InternalException: Method &lt;init&gt; (Ljava/util/HashMap;)V couldn't be decompiled.
   at org.jetbrains.java.decompiler.IdeaLogger.writeMessage(IdeaLogger.java:44)
   at org.jetbrains.java.decompiler.main.rels.ClassWrapper.init(ClassWrapper.java:151)
   at org.jetbrains.java.decompiler.main.ClassesProcessor.initWrappers(ClassesProcessor.java:305)
   at org.jetbrains.java.decompiler.main.ClassesProcessor.writeClass(ClassesProcessor.java:252)
   at org.jetbrains.java.decompiler.main.Fernflower.getClassContent(Fernflower.java:86)
   at org.jetbrains.java.decompiler.struct.ContextUnit.save(ContextUnit.java:113)
   at org.jetbrains.java.decompiler.struct.StructContext.saveContext(StructContext.java:72)
   at org.jetbrains.java.decompiler.main.Fernflower.decompileContext(Fernflower.java:54)
   at org.jetbrains.java.decompiler.main.decompiler.BaseDecompiler.decompileContext(BaseDecompiler.java:41)
   at org.jetbrains.java.decompiler.IdeaDecompiler.getText(IdeaDecompiler.java:151)
   ... 73 more
  Caused by: java.lang.ClassCastException: org.jetbrains.java.decompiler.struct.consts.PrimitiveConstant cannot be cast to org.jetbrains.java.decompiler.struct.consts.LinkConstant
   at org.jetbrains.java.decompiler.modules.decompiler.ExprProcessor.processBlock(ExprProcessor.java:563)
   at org.jetbrains.java.decompiler.modules.decompiler.ExprProcessor.processStatement(ExprProcessor.java:202)
   at org.jetbrains.java.decompiler.main.rels.MethodProcessorThread.codeToJava(MethodProcessorThread.java:162)
   at org.jetbrains.java.decompiler.main.rels.ClassWrapper.init(ClassWrapper.java:92)
   ... 81 more
  &lt;/pre&gt;</code></pre>
  </div>
  </div>
  </p>