added comments

src/main/java/com/mysema/codegen/CodeWriter.java

@@ -12,6 +12,8 @@ import java.util.Collection;
 import org.apache.commons.collections15.Transformer;
 
 /**
+ * CodeWriter defines an interface for serializing Java source code
+ * 
  * @author tiwe
  *
  */

src/main/java/com/mysema/codegen/JavaWriter.java

@@ -26,6 +26,8 @@ import org.apache.commons.lang.StringEscapeUtils;
 import org.apache.commons.lang.StringUtils;
 
 /**
+ * JavaWriter is the default implementation of the CodeWriter interface
+ * 
  * @author tiwe
  *
  */

src/main/java/com/mysema/codegen/LocationAndKind.java

@@ -11,6 +11,8 @@ import javax.tools.JavaFileManager.Location;
 import javax.tools.JavaFileObject.Kind;
 
 /**
+ * LocationAndKind defines a pair of Location and Kind
+ * 
  * @author tiwe
  *
  */

src/main/java/com/mysema/codegen/MemClassLoader.java

@@ -23,6 +23,8 @@ import javax.tools.JavaFileObject.Kind;
 
 
 /**
+ * MemClassLoader is a mmemory based implementation of the ClassLoader interface
+ * 
  * @author tiwe
  *
  */

src/main/java/com/mysema/codegen/MemFileManager.java

@@ -25,6 +25,8 @@ import javax.tools.JavaFileObject.Kind;
 
 
 /**
+ * MemFileManager is a memory based implementation of the JavaFileManager interface
+ * 
  * @author tiwe
  *
  */

src/main/java/com/mysema/codegen/MemJavaFileObject.java

@@ -18,6 +18,8 @@ import java.net.URI;
 import javax.tools.SimpleJavaFileObject;
 
 /**
+ * MemJavaFileObject defines an in memory compiled Java file
+ * 
  * @author tiwe
  *
  */

src/main/java/com/mysema/codegen/MemSourceFileObject.java

@@ -14,6 +14,8 @@ import javax.tools.JavaFileObject;
 import javax.tools.SimpleJavaFileObject;
 
 /**
+ * MemSourceFileObject defines a in-memory Java source file object
+ * 
  * @author tiwe
  *
  */

src/main/java/com/mysema/codegen/SimpleCompiler.java

@@ -28,6 +28,9 @@ import javax.tools.StandardJavaFileManager;
 import javax.tools.ToolProvider;
 
 /**
+ * SimpleCompiler provides a convenience wrapper of the JavaCompiler interface with automatic
+ * classpath generation
+ * 
  * @author tiwe
  *
  */

src/main/java/com/mysema/codegen/Symbols.java

@@ -6,6 +6,8 @@
 package com.mysema.codegen;
 
 /**
+ * Defines general String constants
+ * 
  * @author tiwe
  *
  */