Marked all static classes as static.

runtime/ClassFile.cs

@@ -81,7 +81,7 @@ namespace IKVM.Internal
 		private string signature;
 		private string[] enclosingMethod;
 
-		private class SupportedVersions
+		private static class SupportedVersions
 		{
 			internal static readonly int Minimum = 45;
 			internal static readonly int Maximum = 50;

runtime/MemberWrapper.cs

@@ -867,7 +867,7 @@ namespace IKVM.Internal
 		}
 
 #if !COMPACT_FRAMEWORK
-		private class NonvirtualInvokeHelper
+		private static class NonvirtualInvokeHelper
 		{
 			private static Hashtable cache;
 			private static ModuleBuilder module;

runtime/TypeWrapper.cs

@@ -51,13 +51,11 @@ namespace IKVM.Internal
 	}
 
 #if !COMPACT_FRAMEWORK
-	class EmitHelper
+	static class EmitHelper
 	{
 		private static MethodInfo objectToString = typeof(object).GetMethod("ToString", BindingFlags.Public | BindingFlags.Instance, null, Type.EmptyTypes, null);
 		private static MethodInfo verboseCastFailure = JVM.SafeGetEnvironmentVariable("IKVM_VERBOSE_CAST") == null ? null : ByteCodeHelperMethods.VerboseCastFailure;
 
-		static EmitHelper() {}
-
 		internal static void Throw(ILGenerator ilgen, string dottedClassName)
 		{
 			TypeWrapper exception = ClassLoaderWrapper.GetBootstrapClassLoader().LoadClassByDottedName(dottedClassName);
@@ -128,7 +126,7 @@ namespace IKVM.Internal
 	}
 #endif
 
-	class AttributeHelper
+	static class AttributeHelper
 	{
 #if !COMPACT_FRAMEWORK
 		private static CustomAttributeBuilder hideFromJavaAttribute;
@@ -3549,7 +3547,7 @@ namespace IKVM.Internal
 	}
 
 #if !COMPACT_FRAMEWORK
-	class BakedTypeCleanupHack
+	static class BakedTypeCleanupHack
 	{
 		private static readonly FieldInfo m_methodBuilder = typeof(ConstructorBuilder).GetField("m_methodBuilder", BindingFlags.Instance | BindingFlags.NonPublic);
 		private static readonly FieldInfo[] methodBuilderFields = GetFieldList(typeof(MethodBuilder), new string[]
@@ -7410,7 +7408,7 @@ namespace IKVM.Internal
 			}
 
 #if !STATIC_COMPILER
-			internal class JniProxyBuilder
+			internal static class JniProxyBuilder
 			{
 				private static ModuleBuilder mod;
 				private static int count;
@@ -7462,7 +7460,7 @@ namespace IKVM.Internal
 			}
 #endif // !STATIC_COMPILER
 
-			private class JniBuilder
+			private static class JniBuilder
 			{
 #if STATIC_COMPILER
 				private static readonly Type localRefStructType = StaticCompiler.GetType("IKVM.Runtime.JNI+Frame");
@@ -7674,7 +7672,7 @@ namespace IKVM.Internal
 				}
 			}
 
-			class TraceHelper
+			private static class TraceHelper
 			{
 #if STATIC_COMPILER
 				private readonly static MethodInfo methodIsTracedMethod = typeof(Tracer).GetMethod("IsTracedMethod");

runtime/compiler.cs

@@ -39,7 +39,7 @@ using ExceptionTableEntry = IKVM.Internal.ClassFile.Method.ExceptionTableEntry;
 using LocalVariableTableEntry = IKVM.Internal.ClassFile.Method.LocalVariableTableEntry;
 using Instruction = IKVM.Internal.ClassFile.Method.Instruction;
 
-class ByteCodeHelperMethods
+static class ByteCodeHelperMethods
 {
 	internal static readonly MethodInfo GetClassFromTypeHandle;
 	internal static readonly MethodInfo multianewarray;

runtime/openjdk.cs

@@ -121,7 +121,7 @@ using ssaGetPropertyAction = sun.security.action.GetPropertyAction;
 using sndResolverConfigurationImpl = sun.net.dns.ResolverConfigurationImpl;
 #endif
 
-sealed class DynamicMethodSupport
+static class DynamicMethodSupport
 {
 	// MONOBUG as of Mono 1.2.5.1, DynamicMethod is too broken to be used
 	internal static readonly bool Enabled = IsFullTrust && Type.GetType("Mono.Runtime") == null;
@@ -885,7 +885,7 @@ namespace IKVM.NativeCode.java
 			}
 		}
 
-		sealed class VirtualFileSystem
+		static class VirtualFileSystem
 		{
 			internal static readonly string RootPath = JVM.IsUnix ? "/.virtual-ikvm-home/" : @"C:\.virtual-ikvm-home\";
 

runtime/vm.cs

@@ -35,10 +35,8 @@ using IKVM.Internal;
 #if !STATIC_COMPILER && !COMPACT_FRAMEWORK
 namespace IKVM.Internal
 {
-	public sealed class Starter
+	public static class Starter
 	{
-		private Starter() {}
-
 		public static void PrepareForSaveDebugImage()
 		{
 			JVM.IsSaveDebugImage  = true;
@@ -66,7 +64,7 @@ namespace IKVM.Internal
 
 namespace IKVM.Internal
 {
-	class JVM
+	static class JVM
 	{
 #if STATIC_COMPILER
 		internal const bool IsStaticCompiler = true;