diff --git a/updater/src/com/intellij/updater/Runner.java b/updater/src/com/intellij/updater/Runner.java
index dbf5348a0f5e..b3678c060e31 100644
--- a/updater/src/com/intellij/updater/Runner.java
+++ b/updater/src/com/intellij/updater/Runner.java
@@ -265,7 +265,7 @@ public class Runner {
       ui.startProcess("Packing JAR file '" + spec.getPatchFile() + "'...");
 
       try (ZipOutputWrapper out = new ZipOutputWrapper(new FileOutputStream(spec.getPatchFile()));
-           ZipInputStream in = new ZipInputStream(new FileInputStream(new File(spec.getJarFile())))) {
+           ZipInputStream in = new ZipInputStream(new FileInputStream(spec.getJarFile()))) {
         ZipEntry e;
         while ((e = in.getNextEntry()) != null) {
           out.zipEntry(e, in);
@@ -594,4 +594,4 @@ public class Runner {
       throw new IllegalStateException("Non-test logger already defined");
     }
   }
-}
\ No newline at end of file
+}
diff --git a/updater/src/com/intellij/updater/SwingUpdaterUI.java b/updater/src/com/intellij/updater/SwingUpdaterUI.java
index 3709b6020d68..e7f2f2a2f1ba 100644
--- a/updater/src/com/intellij/updater/SwingUpdaterUI.java
+++ b/updater/src/com/intellij/updater/SwingUpdaterUI.java
@@ -15,7 +15,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-@SuppressWarnings({"UseJBColor", "UseDPIAwareInsets", "UseDPIAwareBorders"})
+@SuppressWarnings({"UseJBColor", "UseDPIAwareBorders", "HardCodedStringLiteral"})
 public class SwingUpdaterUI implements UpdaterUI {
   private static final EmptyBorder FRAME_BORDER = new EmptyBorder(8, 8, 8, 8);
   private static final EmptyBorder LABEL_BORDER = new EmptyBorder(0, 0, 5, 0);
@@ -241,7 +241,6 @@ public class SwingUpdaterUI implements UpdaterUI {
     return "<b>" + text + "</b>";
   }
 
-  @SuppressWarnings("SSBasedInspection")
   private static void invokeLater(Runnable runnable) {
     SwingUtilities.invokeLater(runnable);
   }
@@ -348,7 +347,7 @@ public class SwingUpdaterUI implements UpdaterUI {
 
   private static class MyCellEditor extends DefaultCellEditor {
     MyCellEditor() {
-      super(new JComboBox());
+      super(new JComboBox<>());
     }
 
     @Override
@@ -384,4 +383,4 @@ public class SwingUpdaterUI implements UpdaterUI {
       return result;
     }
   }
-}
\ No newline at end of file
+}
diff --git a/updater/src/com/intellij/updater/Utils.java b/updater/src/com/intellij/updater/Utils.java
index 99d11935dd7b..d83f18628311 100644
--- a/updater/src/com/intellij/updater/Utils.java
+++ b/updater/src/com/intellij/updater/Utils.java
@@ -345,7 +345,6 @@ public class Utils {
     @Override
     @SuppressWarnings("NonPrivateFieldAccessedInSynchronizedContext")
     public synchronized void writeTo(OutputStream out) throws IOException {
-      //noinspection UnnecessarilyQualifiedStaticUsage
       Utils.writeBytes(buf, count, out);
     }
   }
@@ -354,4 +353,4 @@ public class Utils {
     try { Thread.sleep(millis); }
     catch (InterruptedException ignore) { }
   }
-}
\ No newline at end of file
+}
diff --git a/updater/src/ie/wombat/jbdiff/JBDiff.java b/updater/src/ie/wombat/jbdiff/JBDiff.java
index bc0380398280..81ca7872ccdc 100644
--- a/updater/src/ie/wombat/jbdiff/JBDiff.java
+++ b/updater/src/ie/wombat/jbdiff/JBDiff.java
@@ -30,7 +30,8 @@ import com.intellij.updater.Utils;
 import com.intellij.updater.Utils.OpenByteArrayOutputStream;
 
 import java.io.*;
-import java.util.Stack;
+import java.util.ArrayDeque;
+import java.util.Deque;
 import java.util.zip.GZIPOutputStream;
 
 /**
@@ -67,8 +68,8 @@ public class JBDiff {
   }
 
   private static void split(int[] I, int[] V, int initStart, int initLen, int h) {
-    Stack<Integer> startStack = new Stack<>();
-    Stack<Integer> lenStack = new Stack<>();
+    Deque<Integer> startStack = new ArrayDeque<>();
+    Deque<Integer> lenStack = new ArrayDeque<>();
     startStack.push(initStart);
     lenStack.push(initLen);
     while (!startStack.isEmpty()) {
@@ -455,4 +456,4 @@ public class JBDiff {
     }
     return 0;
   }
-}
\ No newline at end of file
+}