use new util class
diff --git a/bundles/runtime/org.eclipse.fx.ui.controls/src/org/eclipse/fx/ui/controls/stage/ResizeableFramePane.java b/bundles/runtime/org.eclipse.fx.ui.controls/src/org/eclipse/fx/ui/controls/stage/ResizeableFramePane.java
index 8d36003..771f0ea 100644
--- a/bundles/runtime/org.eclipse.fx.ui.controls/src/org/eclipse/fx/ui/controls/stage/ResizeableFramePane.java
+++ b/bundles/runtime/org.eclipse.fx.ui.controls/src/org/eclipse/fx/ui/controls/stage/ResizeableFramePane.java
@@ -10,7 +10,7 @@
  *******************************************************************************/

 package org.eclipse.fx.ui.controls.stage;

 

-import org.eclipse.fx.core.Util;

+import org.eclipse.fx.core.NumberUtils;

 

 import javafx.beans.Observable;

 import javafx.beans.property.BooleanProperty;

@@ -124,7 +124,7 @@
 						case TOP:

 						{

 							double value = this.height + -1 * (int) deltaY;

-							double constraintedValue = Util.unsignedConstraintValue(

+							double constraintedValue = NumberUtils.unsignedConstraintValue(

 									value,

 									getMinHeight(),

 									getMaxHeight());

@@ -139,7 +139,7 @@
 						case BOTTOM:

 						{

 							double value = this.height + deltaY;

-							value = Util.unsignedConstraintValue(

+							value = NumberUtils.unsignedConstraintValue(

 									value,

 									getMinHeight(),

 									getMaxHeight());

@@ -149,7 +149,7 @@
 						case LEFT:

 						{

 							double value = this.width + -1 * (int) deltaX;

-							double constraintedValue = Util.unsignedConstraintValue(

+							double constraintedValue = NumberUtils.unsignedConstraintValue(

 									value,

 									getMinWidth(),

 									getMaxWidth());

@@ -165,7 +165,7 @@
 						case RIGHT:

 						{

 							double value = this.width + deltaX;

-							value = Util.unsignedConstraintValue(

+							value = NumberUtils.unsignedConstraintValue(

 									value,

 									getMinWidth(),

 									getMaxWidth());

@@ -204,7 +204,7 @@
 					if( ne.doubleValue() != -1 ) {

 						if( getScene() != null && getScene().getWindow() != null ) {

 							Window w = getScene().getWindow();

-							getScene().getWindow().setWidth(Util.unsignedConstraintValue(w.getWidth(), getMinWidth(), getMaxWidth()));

+							getScene().getWindow().setWidth(NumberUtils.unsignedConstraintValue(w.getWidth(), getMinWidth(), getMaxWidth()));

 						}

 					}

 				};

@@ -217,7 +217,7 @@
 					if( ne.doubleValue() != -1 ) {

 						if( getScene() != null && getScene().getWindow() != null ) {

 							Window w = getScene().getWindow();

-							getScene().getWindow().setHeight(Util.unsignedConstraintValue(w.getHeight(), getMinHeight(), getMaxHeight()));

+							getScene().getWindow().setHeight(NumberUtils.unsignedConstraintValue(w.getHeight(), getMinHeight(), getMaxHeight()));

 						}

 					}

 				};