prefer isEmpty over length() == 0

src/main/java/appeng/core/api/ApiPart.java

@@ -82,7 +82,7 @@ public class ApiPart implements IPartHelper
 
 	public Class getCombinedInstance( String base )
 	{
-		if( this.desc.size() == 0 )
+		if( this.desc.isEmpty() )
 		{
 			try
 			{

src/main/java/appeng/core/features/registries/InscriberRegistry.java

@@ -179,7 +179,7 @@ public final class InscriberRegistry implements IInscriberRegistry
 			{
 				throw new IllegalStateException( "Input must be defined." );
 			}
-			if( this.inputs.size() == 0 )
+			if( this.inputs.isEmpty() )
 			{
 				throw new IllegalStateException( "Input must have a size." );
 			}

src/main/java/appeng/core/features/registries/WirelessRegistry.java

@@ -95,7 +95,7 @@ public final class WirelessRegistry implements IWirelessTermRegistry
 
 		final IWirelessTermHandler handler = this.getWirelessTerminalHandler( item );
 		final String unparsedKey = handler.getEncryptionKey( item );
-		if( unparsedKey.length() == 0 )
+		if( unparsedKey.isEmpty() )
 		{
 			player.addChatMessage( PlayerMessages.DeviceNotLinked.get() );
 			return;