diff --git a/src/main/java/com/moparisthebest/sxf4j/ClassXmlElement.java b/src/main/java/com/moparisthebest/sxf4j/ClassXmlElement.java
index d447aeb..611ee68 100755
--- a/src/main/java/com/moparisthebest/sxf4j/ClassXmlElement.java
+++ b/src/main/java/com/moparisthebest/sxf4j/ClassXmlElement.java
@@ -18,7 +18,7 @@ public class ClassXmlElement {
 			, "WARNING: INFINITE RECURSION DETECTED"
 	};
 
-	public static boolean debug = false;
+	public static final boolean debug = false;
 
 	private final String uuid;
 
@@ -293,7 +293,7 @@ public class ClassXmlElement {
 				else
 					ret = m.invoke(container);
 			} catch (Exception e) {
-				e.printStackTrace();
+				throw new RuntimeException(e);
 			}
 			return ret;
 		}
diff --git a/src/main/java/com/moparisthebest/sxf4j/impl/AbstractXmlElement.java b/src/main/java/com/moparisthebest/sxf4j/impl/AbstractXmlElement.java
index be646de..bd471eb 100755
--- a/src/main/java/com/moparisthebest/sxf4j/impl/AbstractXmlElement.java
+++ b/src/main/java/com/moparisthebest/sxf4j/impl/AbstractXmlElement.java
@@ -64,9 +64,9 @@ public abstract class AbstractXmlElement implements XmlElement, XmlElementFactor
 				constructor.setAccessible(true);
 			return (E) constructor.newInstance();
 		} catch (Exception e) {
-			e.printStackTrace();
+			// ignore
 		} catch (Error e) {
-			e.printStackTrace();
+			// ignore
 		}
 		return null;
 	}
@@ -107,9 +107,8 @@ public abstract class AbstractXmlElement implements XmlElement, XmlElementFactor
 			writeToStream(bos);
 			return new String(bos.toByteArray(), "UTF-8");
 		} catch (Exception e) {
-			e.printStackTrace();
+			throw new RuntimeException(e);
 		}
-		return new String(bos.toByteArray());
 	}
 
 	@Override
diff --git a/src/main/java/com/moparisthebest/sxf4j/impl/W3CXmlElement.java b/src/main/java/com/moparisthebest/sxf4j/impl/W3CXmlElement.java
index bf2bf57..5d1f1cf 100755
--- a/src/main/java/com/moparisthebest/sxf4j/impl/W3CXmlElement.java
+++ b/src/main/java/com/moparisthebest/sxf4j/impl/W3CXmlElement.java
@@ -27,7 +27,7 @@ public class W3CXmlElement extends AbstractXmlElement {
 			try{
 				db = DocumentBuilderFactory.newInstance().newDocumentBuilder();
 			}catch(Exception e){
-				e.printStackTrace();
+				throw new RuntimeException(e);
 			}
 			if(db == null){
 				internal = null;