diff --git a/.gitignore b/.gitignore
index 0b28ad333..80c50f9b8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,9 @@
 .idea
 .gradle
 *.DS_Store
+
+.classpath
+.project
+.settings/
+bin/
+*.launch
diff --git a/src/main/java/dan200/computercraft/api/filesystem/IMount.java b/src/main/java/dan200/computercraft/api/filesystem/IMount.java
index 1fec70994..1952ee9e0 100644
--- a/src/main/java/dan200/computercraft/api/filesystem/IMount.java
+++ b/src/main/java/dan200/computercraft/api/filesystem/IMount.java
@@ -90,7 +90,6 @@ public interface IMount
      * @throws IOException If the file does not exist, or could not be opened.
      */
     @Nonnull
-    @SuppressWarnings( "deprecation" )
     default ReadableByteChannel openChannelForRead( @Nonnull String path ) throws IOException
     {
         return Channels.newChannel( openForRead( path ) );
diff --git a/src/main/java/dan200/computercraft/api/filesystem/IWritableMount.java b/src/main/java/dan200/computercraft/api/filesystem/IWritableMount.java
index e265842e7..38ae27da0 100644
--- a/src/main/java/dan200/computercraft/api/filesystem/IWritableMount.java
+++ b/src/main/java/dan200/computercraft/api/filesystem/IWritableMount.java
@@ -67,7 +67,6 @@ public interface IWritableMount extends IMount
      * @throws IOException If the file could not be opened for writing.
      */
     @Nonnull
-    @SuppressWarnings( "deprecation" )
     default WritableByteChannel openChannelForWrite( @Nonnull String path ) throws IOException
     {
         return Channels.newChannel( openForWrite( path ) );
@@ -94,7 +93,6 @@ default WritableByteChannel openChannelForWrite( @Nonnull String path ) throws I
      * @throws IOException If the file could not be opened for writing.
      */
     @Nonnull
-    @SuppressWarnings( "deprecation" )
     default WritableByteChannel openChannelForAppend( @Nonnull String path ) throws IOException
     {
         return Channels.newChannel( openForAppend( path ) );
diff --git a/src/main/java/dan200/computercraft/core/apis/HTTPAPI.java b/src/main/java/dan200/computercraft/core/apis/HTTPAPI.java
index 23fb93ed3..d1d808f6e 100644
--- a/src/main/java/dan200/computercraft/core/apis/HTTPAPI.java
+++ b/src/main/java/dan200/computercraft/core/apis/HTTPAPI.java
@@ -83,6 +83,7 @@ public String[] getMethodNames()
     }
 
     @Override
+    @SuppressWarnings( "resource" )
     public Object[] callMethod( @Nonnull ILuaContext context, int method, @Nonnull Object[] args ) throws LuaException
     {
         switch( method )
@@ -95,7 +96,7 @@ public Object[] callMethod( @Nonnull ILuaContext context, int method, @Nonnull O
 
                 if( args.length >= 1 && args[0] instanceof Map )
                 {
-                    Map<?, ?> options = (Map) args[0];
+                    Map<?, ?> options = (Map<?, ?>) args[0];
                     address = getStringField( options, "url" );
                     postString = optStringField( options, "body", null );
                     headerTable = optTableField( options, "headers", Collections.emptyMap() );
@@ -135,7 +136,6 @@ public Object[] callMethod( @Nonnull ILuaContext context, int method, @Nonnull O
                 try
                 {
                     URI uri = HttpRequest.checkUri( address );
-
                     HttpRequest request = new HttpRequest( requests, m_apiEnvironment, address, postString, headers, binary, redirect );
 
                     long requestBody = request.body().readableBytes() + HttpRequest.getHeaderSize( headers );
diff --git a/src/main/java/dan200/computercraft/core/apis/OSAPI.java b/src/main/java/dan200/computercraft/core/apis/OSAPI.java
index fbbfe5e0f..d83559207 100644
--- a/src/main/java/dan200/computercraft/core/apis/OSAPI.java
+++ b/src/main/java/dan200/computercraft/core/apis/OSAPI.java
@@ -401,7 +401,6 @@ public Object[] callMethod( @Nonnull ILuaContext context, int method, @Nonnull O
                 Instant instant = Instant.ofEpochSecond( time );
                 ZonedDateTime date;
                 ZoneOffset offset;
-                boolean isDst;
                 if( format.startsWith( "!" ) )
                 {
                     offset = ZoneOffset.UTC;
diff --git a/src/main/java/dan200/computercraft/core/apis/PeripheralAPI.java b/src/main/java/dan200/computercraft/core/apis/PeripheralAPI.java
index eb77fe12b..09025978c 100644
--- a/src/main/java/dan200/computercraft/core/apis/PeripheralAPI.java
+++ b/src/main/java/dan200/computercraft/core/apis/PeripheralAPI.java
@@ -356,7 +356,6 @@ public Object[] callMethod( @Nonnull ILuaContext context, int method, @Nonnull O
                 ComputerSide side = ComputerSide.valueOfInsensitive( getString( args, 0 ) );
                 if( side != null )
                 {
-                    String type = null;
                     synchronized( m_peripherals )
                     {
                         PeripheralWrapper p = m_peripherals[side.ordinal()];
diff --git a/src/main/java/dan200/computercraft/core/computer/Computer.java b/src/main/java/dan200/computercraft/core/computer/Computer.java
index e1ee67083..101707ca6 100644
--- a/src/main/java/dan200/computercraft/core/computer/Computer.java
+++ b/src/main/java/dan200/computercraft/core/computer/Computer.java
@@ -239,7 +239,6 @@ public void addAPI( dan200.computercraft.core.apis.ILuaAPI api )
     }
 
     @Deprecated
-    @SuppressWarnings( "unused" )
     public void advance( double dt )
     {
         tick();
diff --git a/src/main/java/dan200/computercraft/core/filesystem/JarMount.java b/src/main/java/dan200/computercraft/core/filesystem/JarMount.java
index 3bedd1eca..24e350330 100644
--- a/src/main/java/dan200/computercraft/core/filesystem/JarMount.java
+++ b/src/main/java/dan200/computercraft/core/filesystem/JarMount.java
@@ -93,7 +93,7 @@ public JarMount( File jarFile, String subPath ) throws IOException
         new MountReference( this );
 
         // Read in all the entries
-        root = new FileEntry( "" );
+        root = new FileEntry();
         Enumeration<? extends ZipEntry> zipEntries = zip.entries();
         while( zipEntries.hasMoreElements() )
         {
@@ -140,7 +140,7 @@ private void create( ZipEntry entry, String localPath )
             FileEntry nextEntry = lastEntry.children.get( part );
             if( nextEntry == null || !nextEntry.isDirectory() )
             {
-                lastEntry.children.put( part, nextEntry = new FileEntry( part ) );
+                lastEntry.children.put( part, nextEntry = new FileEntry() );
             }
 
             lastEntry = nextEntry;
@@ -224,17 +224,10 @@ public ReadableByteChannel openChannelForRead( @Nonnull String path ) throws IOE
 
     private static class FileEntry
     {
-        final String name;
-
         String path;
         long size;
         Map<String, FileEntry> children;
 
-        FileEntry( String name )
-        {
-            this.name = name;
-        }
-
         void setup( ZipEntry entry )
         {
             path = entry.getName();
diff --git a/src/main/java/dan200/computercraft/shared/common/BlockGeneric.java b/src/main/java/dan200/computercraft/shared/common/BlockGeneric.java
index bc60d2f0e..fa039875e 100644
--- a/src/main/java/dan200/computercraft/shared/common/BlockGeneric.java
+++ b/src/main/java/dan200/computercraft/shared/common/BlockGeneric.java
@@ -51,7 +51,6 @@ public final boolean onBlockActivated( World world, BlockPos pos, IBlockState st
 
     @Override
     @Deprecated
-    @SuppressWarnings( "deprecation" )
     public final void neighborChanged( IBlockState state, World world, BlockPos pos, Block neighbourBlock, BlockPos neighbourPos )
     {
         TileEntity tile = world.getTileEntity( pos );
diff --git a/src/main/java/dan200/computercraft/shared/common/TileGeneric.java b/src/main/java/dan200/computercraft/shared/common/TileGeneric.java
index 850bf844c..0634f0497 100644
--- a/src/main/java/dan200/computercraft/shared/common/TileGeneric.java
+++ b/src/main/java/dan200/computercraft/shared/common/TileGeneric.java
@@ -63,7 +63,6 @@ public void onNeighbourChange()
     {
     }
 
-    @SuppressWarnings( "deprecation" )
     public void onNeighbourChange( @Nonnull BlockPos neighbour )
     {
         onNeighbourChange();
diff --git a/src/main/java/dan200/computercraft/shared/computer/core/ServerComputer.java b/src/main/java/dan200/computercraft/shared/computer/core/ServerComputer.java
index f5799af28..e75b55fa3 100644
--- a/src/main/java/dan200/computercraft/shared/computer/core/ServerComputer.java
+++ b/src/main/java/dan200/computercraft/shared/computer/core/ServerComputer.java
@@ -220,6 +220,13 @@ public int getInstanceID()
         return m_instanceID;
     }
 
+    /*
+     * getID and getLabel are deprecated on IComputer, as they do not make sense in ClientComputer.
+     * However, for compatibility reasons, we still need these here, and have no choice but to override the IComputer methods.
+     *
+     * Hence, we suppress the deprecation warning.
+     */
+
     @Override
     @SuppressWarnings( "deprecation" )
     public int getID()
diff --git a/src/main/java/dan200/computercraft/shared/integration/jei/JEIComputerCraft.java b/src/main/java/dan200/computercraft/shared/integration/jei/JEIComputerCraft.java
index 6ec7aaddf..867b89947 100644
--- a/src/main/java/dan200/computercraft/shared/integration/jei/JEIComputerCraft.java
+++ b/src/main/java/dan200/computercraft/shared/integration/jei/JEIComputerCraft.java
@@ -90,6 +90,7 @@ public void onRuntimeAvailable( IJeiRuntime runtime )
         ingredients.addIngredientsAtRuntime( VanillaTypes.ITEM, upgradeItems );
 
         // Hide all upgrade recipes
+        @SuppressWarnings( "unchecked" )
         IRecipeCategory<? extends IRecipeWrapper> category = (IRecipeCategory<? extends IRecipeWrapper>) registry.getRecipeCategory( VanillaRecipeCategoryUid.CRAFTING );
         if( category != null )
         {
diff --git a/src/main/java/dan200/computercraft/shared/peripheral/speaker/SpeakerPeripheral.java b/src/main/java/dan200/computercraft/shared/peripheral/speaker/SpeakerPeripheral.java
index dcc19ccd9..bda1fe4e0 100644
--- a/src/main/java/dan200/computercraft/shared/peripheral/speaker/SpeakerPeripheral.java
+++ b/src/main/java/dan200/computercraft/shared/peripheral/speaker/SpeakerPeripheral.java
@@ -44,7 +44,7 @@ public Vec3d getPosition()
     {
         // FIXME: Should be abstract, but we need this for Plethora compat. We'll
         //  be able to change this in a few versions as we implement both there.
-        @SuppressWarnings( "deprecation" ) BlockPos pos = getPos();
+        BlockPos pos = getPos();
         return new Vec3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 );
     }
 
diff --git a/src/main/java/dan200/computercraft/shared/turtle/core/TurtlePlaceCommand.java b/src/main/java/dan200/computercraft/shared/turtle/core/TurtlePlaceCommand.java
index 16fd6e508..34ad51413 100644
--- a/src/main/java/dan200/computercraft/shared/turtle/core/TurtlePlaceCommand.java
+++ b/src/main/java/dan200/computercraft/shared/turtle/core/TurtlePlaceCommand.java
@@ -65,7 +65,6 @@ public TurtleCommandResult execute( @Nonnull ITurtleAccess turtle )
 
         // Remember old block
         EnumFacing direction = m_direction.toWorldDir( turtle );
-        World world = turtle.getWorld();
         BlockPos coordinates = turtle.getPosition().offset( direction );
 
         // Create a fake player, and orient it appropriately
diff --git a/src/main/java/dan200/computercraft/shared/util/StringUtil.java b/src/main/java/dan200/computercraft/shared/util/StringUtil.java
index 8c92a25a4..d08f0f8ba 100644
--- a/src/main/java/dan200/computercraft/shared/util/StringUtil.java
+++ b/src/main/java/dan200/computercraft/shared/util/StringUtil.java
@@ -35,7 +35,6 @@ public static String normaliseLabel( String label )
     /**
      * Translates a Stat name
      */
-    @SuppressWarnings( "deprecation" )
     public static String translate( String key )
     {
         return net.minecraft.util.text.translation.I18n.translateToLocal( key );
@@ -44,7 +43,6 @@ public static String translate( String key )
     /**
      * Translates a Stat name with format args
      */
-    @SuppressWarnings( "deprecation" )
     public static String translateFormatted( String key, Object... format )
     {
         return net.minecraft.util.text.translation.I18n.translateToLocalFormatted( key, format );
diff --git a/src/test/java/dan200/computercraft/shared/wired/NetworkTest.java b/src/test/java/dan200/computercraft/shared/wired/NetworkTest.java
index 6a44ccba4..24f121a2a 100644
--- a/src/test/java/dan200/computercraft/shared/wired/NetworkTest.java
+++ b/src/test/java/dan200/computercraft/shared/wired/NetworkTest.java
@@ -25,7 +25,6 @@
 import org.apache.logging.log4j.LogManager;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Disabled;
-import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
 
 import javax.annotation.Nonnull;
@@ -440,20 +439,6 @@ public Grid( int size )
             this.box = (T[]) new Object[size * size * size];
         }
 
-        public void set( BlockPos pos, T elem )
-        {
-            int x = pos.getX(), y = pos.getY(), z = pos.getZ();
-
-            if( x >= 0 && x < size && y >= 0 && y < size && z >= 0 && z < size )
-            {
-                box[x * size * size + y * size + z] = elem;
-            }
-            else
-            {
-                throw new IndexOutOfBoundsException( pos.toString() );
-            }
-        }
-
         public T get( BlockPos pos )
         {
             int x = pos.getX(), y = pos.getY(), z = pos.getZ();