diff --git a/java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/impl/DaemonRespondToChangesTest.java b/java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/impl/DaemonRespondToChangesTest.java
index 6768120caf90..8c292019fdf8 100644
--- a/java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/impl/DaemonRespondToChangesTest.java
+++ b/java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/impl/DaemonRespondToChangesTest.java
@@ -81,7 +81,6 @@ import com.intellij.openapi.project.DumbServiceImpl;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.project.ProjectManager;
 import com.intellij.openapi.project.ex.ProjectManagerEx;
-import com.intellij.openapi.project.impl.ProjectManagerImpl;
 import com.intellij.openapi.util.Disposer;
 import com.intellij.openapi.util.ProperTextRange;
 import com.intellij.openapi.util.Segment;
@@ -148,7 +147,7 @@ public class DaemonRespondToChangesTest extends DaemonAnalyzerTestCase {
       Project project = getProject();
       if (project != null) {
         doPostponedFormatting(project);
-        ((ProjectManagerImpl)ProjectManagerEx.getInstanceEx()).forceCloseProject(project, false);
+        ProjectManagerEx.getInstanceEx().forceCloseProject(project, false);
       }
     }
     finally {
diff --git a/platform/lang-impl/src/com/intellij/ide/projectView/impl/AbstractProjectViewPane.java b/platform/lang-impl/src/com/intellij/ide/projectView/impl/AbstractProjectViewPane.java
index c6ed96f7a631..9e430854eeb6 100644
--- a/platform/lang-impl/src/com/intellij/ide/projectView/impl/AbstractProjectViewPane.java
+++ b/platform/lang-impl/src/com/intellij/ide/projectView/impl/AbstractProjectViewPane.java
@@ -518,7 +518,7 @@ public abstract class AbstractProjectViewPane implements DataProvider, Disposabl
   }
 
   protected void installComparator(AbstractTreeBuilder builder, @NotNull Comparator<? super NodeDescriptor> comparator) {
-    if (builder != null) builder.setNodeDescriptorComparator((Comparator)comparator);
+    if (builder != null) builder.setNodeDescriptorComparator(comparator);
   }
 
   public JTree getTree() {
diff --git a/platform/platform-api/src/com/intellij/ui/speedSearch/ListWithFilter.java b/platform/platform-api/src/com/intellij/ui/speedSearch/ListWithFilter.java
index b44bb242d7ce..f2ba76fe9f5f 100644
--- a/platform/platform-api/src/com/intellij/ui/speedSearch/ListWithFilter.java
+++ b/platform/platform-api/src/com/intellij/ui/speedSearch/ListWithFilter.java
@@ -8,7 +8,6 @@ package com.intellij.ui.speedSearch;
 import com.intellij.openapi.actionSystem.DataProvider;
 import com.intellij.openapi.ui.popup.JBPopup;
 import com.intellij.openapi.ui.popup.util.PopupUtil;
-import com.intellij.openapi.util.Condition;
 import com.intellij.openapi.wm.IdeFocusManager;
 import com.intellij.ui.DocumentAdapter;
 import com.intellij.ui.LightColors;
@@ -76,7 +75,7 @@ public class ListWithFilter<T> extends JPanel implements DataProvider {
     myList.addKeyListener(mySpeedSearch);
     int selectedIndex = myList.getSelectedIndex();
     int modelSize = myList.getModel().getSize();
-    myModel = new NameFilteringListModel<T>(myList, (Function<T, String>)namer, s -> mySpeedSearch.shouldBeShowing(s), mySpeedSearch);
+    myModel = new NameFilteringListModel<T>(myList, namer, mySpeedSearch::shouldBeShowing, mySpeedSearch);
     if (myModel.getSize() == modelSize) {
       myList.setSelectedIndex(selectedIndex);
     }
diff --git a/platform/util/src/com/intellij/util/containers/JBTreeTraverser.java b/platform/util/src/com/intellij/util/containers/JBTreeTraverser.java
index e976983a39d6..458b77de114d 100644
--- a/platform/util/src/com/intellij/util/containers/JBTreeTraverser.java
+++ b/platform/util/src/com/intellij/util/containers/JBTreeTraverser.java
@@ -23,7 +23,7 @@ public class JBTreeTraverser<T> extends FilteredTraverserBase<T, JBTreeTraverser
 
   @NotNull
   public static <T> JBTreeTraverser<T> from(@NotNull Function<? super T, ? extends Iterable<? extends T>> treeStructure) {
-    return new JBTreeTraverser<T>((Function<T, ? extends Iterable<? extends T>>)treeStructure);
+    return new JBTreeTraverser<T>(treeStructure);
   }
 
   @NotNull
diff --git a/platform/util/src/com/intellij/util/containers/TransferToEDTQueue.java b/platform/util/src/com/intellij/util/containers/TransferToEDTQueue.java
index 7ae4dae87fa4..9f8c1d34725a 100644
--- a/platform/util/src/com/intellij/util/containers/TransferToEDTQueue.java
+++ b/platform/util/src/com/intellij/util/containers/TransferToEDTQueue.java
@@ -81,7 +81,7 @@ public class TransferToEDTQueue<T> {
   };
 
   public TransferToEDTQueue(@NotNull @NonNls String name, @NotNull Processor<? super T> processor, @NotNull Condition<?> shutUpCondition) {
-    this(name, (Processor)processor, shutUpCondition, DEFAULT_THRESHOLD);
+    this(name, processor, shutUpCondition, DEFAULT_THRESHOLD);
   }
 
   public TransferToEDTQueue(@NotNull @NonNls String name,