diff --git a/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/model/Five.java b/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/model/Five.java
index 9ecbfdd67..286b26841 100644
--- a/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/model/Five.java
+++ b/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/model/Five.java
@@ -39,6 +39,6 @@ public boolean equals(Object obj) {
     }
 
     public int hashCode() {
-        return super.hashCode() + two + new Boolean(three).hashCode() + five.toString().hashCode();
+        return super.hashCode() + two + Boolean.valueOf(three).hashCode() + five.toString().hashCode();
     }
 }
\ No newline at end of file
diff --git a/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/model/FiveBean.java b/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/model/FiveBean.java
index a219f39c7..dd53009d0 100644
--- a/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/model/FiveBean.java
+++ b/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/model/FiveBean.java
@@ -63,6 +63,6 @@ public boolean equals(Object obj) {
     }
 
     public int hashCode() {
-        return super.hashCode() + two + new Boolean(three).hashCode() + five.toString().hashCode();
+        return super.hashCode() + two + Boolean.valueOf(three).hashCode() + five.toString().hashCode();
     }
 }
\ No newline at end of file
diff --git a/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/model/SerializableFive.java b/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/model/SerializableFive.java
index cefc10d0b..fc1c03c85 100644
--- a/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/model/SerializableFive.java
+++ b/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/model/SerializableFive.java
@@ -52,6 +52,6 @@ public boolean equals(Object obj) {
     }
 
     public int hashCode() {
-        return super.hashCode() + two + new Boolean(three).hashCode() + five.toString().hashCode();
+        return super.hashCode() + two + Boolean.valueOf(three).hashCode() + five.toString().hashCode();
     }
 }
\ No newline at end of file
diff --git a/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/targets/BasicTarget.java b/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/targets/BasicTarget.java
index 582f717a8..a4abb5b55 100644
--- a/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/targets/BasicTarget.java
+++ b/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/targets/BasicTarget.java
@@ -31,14 +31,14 @@ public class BasicTarget implements Target {
     
     public BasicTarget() {
         list = new ArrayList();
-        list.add(new Integer(1));
-        list.add(new Byte((byte)2));
-        list.add(new Short((short)3));
-        list.add(new Long(4));
+        list.add(Integer.valueOf(1));
+        list.add(Byte.valueOf((byte)2));
+        list.add(Short.valueOf((short)3));
+        list.add(Long.valueOf(4));
         list.add("Profile");
         list.add(Boolean.TRUE);
-        list.add(new Float(1.2f));
-        list.add(new Double(1.2f));
+        list.add(Float.valueOf(1.2f));
+        list.add(Double.valueOf(1.2f));
         list.add(new File("profile.txt"));
         list.add(Locale.ENGLISH);
     }
diff --git a/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/targets/ExtendedTarget.java b/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/targets/ExtendedTarget.java
index cc0e78a94..f493f4d4a 100644
--- a/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/targets/ExtendedTarget.java
+++ b/xstream-benchmark/src/java/com/thoughtworks/xstream/tools/benchmark/targets/ExtendedTarget.java
@@ -87,7 +87,7 @@ public Object invoke(Object proxy, Method method, Object[] args) throws Throwabl
             if (method.equals(EQUALS)) {
                 return new Boolean(args[0] instanceof Runnable);
             } else if (method.getName().equals("hashCode")) {
-                return new Integer(System.identityHashCode(proxy));
+                return Integer.valueOf(System.identityHashCode(proxy));
             } else if (method.getName().equals("toString")) {
                 return "Proxy" + System.identityHashCode(proxy);
             } else if (method.getName().equals("getClass")) {
diff --git a/xstream/src/java/com/thoughtworks/xstream/converters/reflection/CGLIBEnhancedConverter.java b/xstream/src/java/com/thoughtworks/xstream/converters/reflection/CGLIBEnhancedConverter.java
index 40d93a615..a0f3c5425 100644
--- a/xstream/src/java/com/thoughtworks/xstream/converters/reflection/CGLIBEnhancedConverter.java
+++ b/xstream/src/java/com/thoughtworks/xstream/converters/reflection/CGLIBEnhancedConverter.java
@@ -156,7 +156,7 @@ public void marshal(final Object source, final HierarchicalStreamWriter writer,
         }
         try {
             final Field field = type.getDeclaredField("serialVersionUID");
-            if (!field.isAccessible()) {
+            if (!(java.lang.reflect.Modifier.isStatic(field.getModifiers()) ? field.canAccess(null) : field.canAccess(source))) {
                 field.setAccessible(true);
             }
             final long serialVersionUID = field.getLong(null);
@@ -186,7 +186,7 @@ private Callback[] getCallbacks(final Object source) {
             for (int i = 0; true; ++i) {
                 try {
                     final Field field = type.getDeclaredField(CALLBACK_MARKER + i);
-                    if (!field.isAccessible()) {
+                    if (!(java.lang.reflect.Modifier.isStatic(field.getModifiers()) ? field.canAccess(null) : field.canAccess(source))) {
                         field.setAccessible(true);
                     }
                     fields.add(field);
@@ -246,7 +246,7 @@ private Callback[] getCallbacks(final Object source) {
             }
             for (final Iterator<Method> iter = methods.iterator(); iter.hasNext();) {
                 final Method method = iter.next();
-                if (!method.isAccessible()) {
+                if (!(java.lang.reflect.Modifier.isStatic(method.getModifiers()) ? method.canAccess(null) : method.canAccess(source))) {
                     method.setAccessible(true);
                 }
                 if (Factory.class.isAssignableFrom(method.getDeclaringClass())
diff --git a/xstream/src/java/com/thoughtworks/xstream/converters/reflection/ExternalizableConverter.java b/xstream/src/java/com/thoughtworks/xstream/converters/reflection/ExternalizableConverter.java
index b13f8dbbf..43b7722a6 100644
--- a/xstream/src/java/com/thoughtworks/xstream/converters/reflection/ExternalizableConverter.java
+++ b/xstream/src/java/com/thoughtworks/xstream/converters/reflection/ExternalizableConverter.java
@@ -149,7 +149,7 @@ public Object unmarshal(final HierarchicalStreamReader reader, final Unmarshalli
         final Constructor<?> defaultConstructor;
         try {
             defaultConstructor = type.getDeclaredConstructor();
-            if (!defaultConstructor.isAccessible()) {
+            if (!defaultConstructor.canAccess(null)) {
                 defaultConstructor.setAccessible(true);
             }
             final Externalizable externalizable = (Externalizable)defaultConstructor.newInstance();
diff --git a/xstream/src/java/com/thoughtworks/xstream/converters/reflection/PureJavaReflectionProvider.java b/xstream/src/java/com/thoughtworks/xstream/converters/reflection/PureJavaReflectionProvider.java
index be4f66ad7..6cfe698c1 100644
--- a/xstream/src/java/com/thoughtworks/xstream/converters/reflection/PureJavaReflectionProvider.java
+++ b/xstream/src/java/com/thoughtworks/xstream/converters/reflection/PureJavaReflectionProvider.java
@@ -70,7 +70,7 @@ public Object newInstance(final Class<?> type) {
             try {
                 for (final Constructor<?> constructor : type.getDeclaredConstructors()) {
                     if (constructor.getParameterTypes().length == 0) {
-                        if (!constructor.isAccessible()) {
+                        if (!constructor.canAccess(null)) {
                             constructor.setAccessible(true);
                         }
                         return constructor.newInstance(new Object[0]);