--- a/core/src/luan/impl/LuanJavaCompiler.java	Thu Apr 07 15:11:52 2016 -0600
+++ b/core/src/luan/impl/LuanJavaCompiler.java	Thu Apr 07 17:06:22 2016 -0600
@@ -6,6 +6,8 @@
 import java.io.IOException;
 import java.net.URI;
 import java.util.Collections;
+import java.util.Map;
+import java.util.HashMap;
 import javax.tools.FileObject;
 import javax.tools.JavaFileObject;
 import javax.tools.SimpleJavaFileObject;
@@ -19,6 +21,38 @@
 public final class LuanJavaCompiler {
 	private LuanJavaCompiler() {}  // never
 
+	private static class MyJavaFileObject extends SimpleJavaFileObject {
+		final ByteArrayOutputStream baos = new ByteArrayOutputStream();
+
+		MyJavaFileObject() {
+			super(URI.create("whatever"),JavaFileObject.Kind.CLASS);
+		}
+
+		@Override public OutputStream openOutputStream() {
+			return baos;
+		}
+
+		byte[] byteCode(String sourceName) {
+			byte[] byteCode = baos.toByteArray();
+			final int len = sourceName.length();
+			int max = byteCode.length-len-3;
+			outer:
+			for( int i=0; true; i++ ) {
+				if( i > max )
+					throw new RuntimeException("len="+len);
+				if( byteCode[i]==1 && (byteCode[i+1] << 8 | 0xFF & byteCode[i+2]) == len ) {
+					for( int j=i+3; j<i+3+len; j++ ) {
+						if( byteCode[j] != '$' )
+							continue outer;
+					}
+					System.arraycopy(sourceName.getBytes(),0,byteCode,i+3,len);
+					break;
+				}
+			}
+			return byteCode;
+		}
+	}
+
 	public static Class compile(final String className,final String sourceName,final String code) throws ClassNotFoundException {
 		final int len = sourceName.length();
 		StringBuilder sb = new StringBuilder(sourceName);
@@ -35,16 +69,15 @@
 				return true;
 			}
 		};
-		ByteArrayOutputStream baos = new ByteArrayOutputStream();
-		JavaFileObject classFile = new SimpleJavaFileObject(URI.create("whatever"),JavaFileObject.Kind.CLASS) {
-			@Override public OutputStream openOutputStream() {
-				return baos;
-			}
-		};
+		final Map<String,MyJavaFileObject> map = new HashMap<String,MyJavaFileObject>();
 		JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
 		StandardJavaFileManager sjfm = compiler.getStandardFileManager(null,null,null);
 		ForwardingJavaFileManager fjfm = new ForwardingJavaFileManager(sjfm) {
 			@Override public JavaFileObject getJavaFileForOutput(JavaFileManager.Location location, String className, JavaFileObject.Kind kind, FileObject sibling) throws IOException {
+				if( map.containsKey(className) )
+					throw new RuntimeException(className);
+				MyJavaFileObject classFile = new MyJavaFileObject();
+				map.put(className,classFile);
 				return classFile;
 			}
 		};
@@ -52,24 +85,11 @@
 		boolean b = compiler.getTask(out, fjfm, null, null, null, Collections.singletonList(sourceFile)).call();
 		if( !b )
 			throw new RuntimeException("\n"+out+"\ncode:\n"+code+"\n");
-		final byte[] byteCode = baos.toByteArray();
-		int max = byteCode.length-len-3;
-		outer:
-		for( int i=0; true; i++ ) {
-			if( i > max )
-				throw new RuntimeException("len="+len);
-			if( byteCode[i]==1 && (byteCode[i+1] << 8 | 0xFF & byteCode[i+2]) == len ) {
-				for( int j=i+3; j<i+3+len; j++ ) {
-					if( byteCode[j] != '$' )
-						continue outer;
-				}
-				System.arraycopy(sourceName.getBytes(),0,byteCode,i+3,len);
-				break;
-			}
-		}
 		ClassLoader cl = new ClassLoader() {
 			@Override protected Class<?> findClass(String name) throws ClassNotFoundException {
-				if( name.equals(className) ) {
+				MyJavaFileObject jfo = map.get(name);
+				if( jfo != null ) {
+					byte[] byteCode = jfo.byteCode(sourceName);
 					return defineClass(name, byteCode, 0, byteCode.length);
 				}
 				return super.findClass(name);