diff --git a/src/java/org/apache/commons/logging/LogFactory.java b/src/java/org/apache/commons/logging/LogFactory.java
index 3740cea..da4fed9 100644
--- a/src/java/org/apache/commons/logging/LogFactory.java
+++ b/src/java/org/apache/commons/logging/LogFactory.java
@@ -729,11 +729,13 @@ public abstract class LogFactory {
 
         try {
             // Are we running on a JDK 1.2 or later system?
-            Method method = Thread.class.getMethod("getContextClassLoader", null);
+            Method method = Thread.class.getMethod("getContextClassLoader", 
+                    (Class[]) null);
 
             // Get the thread context class loader (if there is one)
             try {
-                classLoader = (ClassLoader)method.invoke(Thread.currentThread(), null);
+                classLoader = (ClassLoader)method.invoke(Thread.currentThread(), 
+                        (Object[]) null);
             } catch (IllegalAccessException e) {
                 throw new LogConfigurationException
                     ("Unexpected IllegalAccessException", e);
@@ -915,7 +917,7 @@ public abstract class LogFactory {
      * @param factoryClass
      * @param classLoader
      * 
-     * @returns either a LogFactory object or a LogConfigurationException object.
+     * @return either a LogFactory object or a LogConfigurationException object.
      */
     protected static Object createFactory(String factoryClass, ClassLoader classLoader) {
 
@@ -1215,7 +1217,7 @@ public abstract class LogFactory {
      * the specified object's class has overidden the toString method.
      * 
      * @param o may be null.
-     * @return
+     * @return a string of form classname@hashcode, or "null" if param o is null.
      */
     public static String objectId(Object o) {
         if (o == null) {
diff --git a/src/java/org/apache/commons/logging/impl/LogFactoryImpl.java b/src/java/org/apache/commons/logging/impl/LogFactoryImpl.java
index 1d1f558..c3ca743 100644
--- a/src/java/org/apache/commons/logging/impl/LogFactoryImpl.java
+++ b/src/java/org/apache/commons/logging/impl/LogFactoryImpl.java
@@ -660,7 +660,7 @@ public class LogFactoryImpl extends LogFactory {
             loadClass("java.util.logging.Logger");
             loadClass("org.apache.commons.logging.impl.Jdk14Logger");
             Class throwable = loadClass("java.lang.Throwable");
-            if (throwable.getDeclaredMethod("getStackTrace", null) == null) {
+            if (throwable.getDeclaredMethod("getStackTrace", (Class[]) null) == null) {
                 return (false);
             }
             logDiagnostic("Found Jdk14.");
diff --git a/src/java/org/apache/commons/logging/impl/SimpleLog.java b/src/java/org/apache/commons/logging/impl/SimpleLog.java
index 843f768..442bbd5 100644
--- a/src/java/org/apache/commons/logging/impl/SimpleLog.java
+++ b/src/java/org/apache/commons/logging/impl/SimpleLog.java
@@ -586,11 +586,13 @@ public class SimpleLog implements Log, Serializable {
         if (classLoader == null) {
             try {
                 // Are we running on a JDK 1.2 or later system?
-                Method method = Thread.class.getMethod("getContextClassLoader", null);
+                Method method = Thread.class.getMethod("getContextClassLoader",
+                        (Class[]) null);
 
                 // Get the thread context class loader (if there is one)
                 try {
-                    classLoader = (ClassLoader)method.invoke(Thread.currentThread(), null);
+                    classLoader = (ClassLoader)method.invoke(Thread.currentThread(), 
+                            (Class[]) null);
                 } catch (IllegalAccessException e) {
                     ;  // ignore
                 } catch (InvocationTargetException e) {