--- jaxb-ri-4.0.5-RI/jaxb-ri/runtime/impl/src/main/java/org/glassfish/jaxb/runtime/v2/schemagen/XmlSchemaGenerator.java	2025-07-17 11:04:19.437124964 +0200
+++ jaxb-ri-4.0.5-RI/jaxb-ri/runtime/impl/src/main/java/org/glassfish/jaxb/runtime/v2/schemagen/XmlSchemaGenerator.java	2025-07-17 15:56:48.470097818 +0200
@@ -49,6 +49,7 @@
 import java.util.*;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import java.util.TreeSet;
 
 import static org.glassfish.jaxb.runtime.v2.schemagen.Util.*;
 
@@ -322,7 +323,7 @@
         // TODO: don't we want to bake in versions?
 
         // generate listing per schema
-        for (Map.Entry<String,Namespace> e : namespaces.entrySet()) {
+        for (Map.Entry<String,Namespace> e : new TreeSet<>(namespaces.entrySet())) {
             Bindings group = root.bindings();
 
             String prefix;
@@ -408,7 +409,7 @@
         }
 
         // then write'em all
-        for( Map.Entry<Namespace,Result> e : out.entrySet() ) {
+        for( Map.Entry<Namespace,Result> e : new TreeSet<>(out.entrySet()) ) {
             Result result = e.getValue();
             e.getKey().writeTo( result, systemIds );
             if(result instanceof StreamResult) {
@@ -550,7 +551,7 @@
                 // additional namespace declarations to be made.
                 Map<String, String> xmlNs = types.getXmlNs(uri);
 
-                for (Map.Entry<String, String> e : xmlNs.entrySet()) {
+                for (Map.Entry<String, String> e : new TreeSet<>(xmlNs.entrySet())) {
                     schema._namespace(e.getValue(),e.getKey());
                 }
 
@@ -612,7 +613,7 @@
                 }
 
                 // then write each component
-                for (Map.Entry<String,ElementDeclaration> e : elementDecls.entrySet()) {
+                for (Map.Entry<String,ElementDeclaration> e : new TreeSet<>(elementDecls.entrySet())) {
                     e.getValue().writeTo(e.getKey(),schema);
                     schema._pcdata(newline);
                 }
@@ -638,7 +639,7 @@
                     writeArray(a,schema);
                     schema._pcdata(newline);
                 }
-                for (Map.Entry<String,AttributePropertyInfo<T,C>> e : attributeDecls.entrySet()) {
+                for (Map.Entry<String,AttributePropertyInfo<T,C>> e : new TreeSet<>(attributeDecls.entrySet())) {
                     TopLevelAttribute a = schema.attribute();
                     a.name(e.getKey());
                     if(e.getValue()==null)