diff --git a/src/j2se/org/luaj/lib/j2se/CoerceLuaToJava.java b/src/j2se/org/luaj/lib/j2se/CoerceLuaToJava.java
index 048e817f..22762df4 100644
--- a/src/j2se/org/luaj/lib/j2se/CoerceLuaToJava.java
+++ b/src/j2se/org/luaj/lib/j2se/CoerceLuaToJava.java
@@ -59,7 +59,7 @@ public class CoerceLuaToJava {
 		};
 		Coercion intCoercion = new Coercion() {
 			public Object coerce(LValue value) {
-				return Integer.valueOf( value.toJavaInt() );
+				return new Integer( value.toJavaInt() );
 			}
 			public int score(LValue value) {
 				if ( value instanceof LInteger )
@@ -73,7 +73,7 @@ public class CoerceLuaToJava {
 		};
 		Coercion doubleCoercion = new Coercion() {
 			public Object coerce(LValue value) {
-				return Double.valueOf( value.toJavaDouble() );
+				return new Double( value.toJavaDouble() );
 			}
 			public int score(LValue value) {
 				if ( value instanceof LDouble )
@@ -102,9 +102,9 @@ public class CoerceLuaToJava {
 				if ( value instanceof LString )
 					return value.toJavaString();
 				if ( value instanceof LInteger )
-					return Integer.valueOf(value.toJavaInt());
+					return new Integer(value.toJavaInt());
 				if ( value instanceof LDouble )
-					return Double.valueOf(value.toJavaDouble());
+					return new Double(value.toJavaDouble());
 				if ( value instanceof LBoolean )
 					return Boolean.valueOf(value.toJavaBoolean());
 				if ( value == LNil.NIL )
diff --git a/src/j2se/org/luaj/lib/j2se/LuajavaLib.java b/src/j2se/org/luaj/lib/j2se/LuajavaLib.java
index 47ce3404..6ca555fb 100644
--- a/src/j2se/org/luaj/lib/j2se/LuajavaLib.java
+++ b/src/j2se/org/luaj/lib/j2se/LuajavaLib.java
@@ -234,7 +234,7 @@ public final class LuajavaLib extends LFunction {
 			Constructor[] cons = clazz.getConstructors();
 			for ( int i=0; i<cons.length; i++ ) {
 				Constructor con = cons[i];
-				Integer n = Integer.valueOf( con.getParameterTypes().length );
+				Integer n = new Integer( con.getParameterTypes().length );
 				List list = (List) index.get(n);
 				if ( list == null )
 					index.put( n, list = new ArrayList() );
@@ -243,7 +243,7 @@ public final class LuajavaLib extends LFunction {
 		}
 		
 		// figure out best list of arguments == supplied args
-		Integer n = Integer.valueOf( params.classes.length );
+		Integer n = new Integer( params.classes.length );
 		List list = (List) index.get(n);
 		if ( list == null )
 			throw new IllegalArgumentException("no constructor with "+n+" args");
@@ -296,7 +296,7 @@ public final class LuajavaLib extends LFunction {
 			for ( int i=0; i<meths.length; i++ ) {
 				Method meth = meths[i];
 				String s = meth.getName();
-				Integer n = Integer.valueOf(meth.getParameterTypes().length);
+				Integer n = new Integer(meth.getParameterTypes().length);
 				Map map = (Map) index.get(s);
 				if ( map == null )
 					index.put( s, map = new HashMap() );
@@ -311,7 +311,7 @@ public final class LuajavaLib extends LFunction {
 		Map map = (Map) index.get(methodName);
 		if ( map == null )
 			throw new IllegalArgumentException("no method named '"+methodName+"'");
-		Integer n = Integer.valueOf( params.classes.length );
+		Integer n = new Integer( params.classes.length );
 		List list = (List) map.get(n);
 		if ( list == null )
 			throw new IllegalArgumentException("no method named '"+methodName+"' with "+n+" args");