diff --git a/connectivity/connectivity-demos-test/pom.xml b/connectivity/connectivity-demos-test/pom.xml
index f9d95d625..ae5382801 100644
--- a/connectivity/connectivity-demos-test/pom.xml
+++ b/connectivity/connectivity-demos-test/pom.xml
@@ -11,6 +11,7 @@
     <jersey.version>2.45</jersey.version>
     <project-build-plugin>12.0.1-SNAPSHOT</project-build-plugin>
     <web.tester.version>12.0.0</web.tester.version>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 
   <pluginRepositories>
diff --git a/connectivity/connectivity-demos/.settings/org.eclipse.core.resources.prefs b/connectivity/connectivity-demos/.settings/org.eclipse.core.resources.prefs
deleted file mode 100644
index 99f26c020..000000000
--- a/connectivity/connectivity-demos/.settings/org.eclipse.core.resources.prefs
+++ /dev/null
@@ -1,2 +0,0 @@
-eclipse.preferences.version=1
-encoding/<project>=UTF-8
diff --git a/connectivity/connectivity-demos/pom.xml b/connectivity/connectivity-demos/pom.xml
index 013c280fa..4c8e6a5db 100644
--- a/connectivity/connectivity-demos/pom.xml
+++ b/connectivity/connectivity-demos/pom.xml
@@ -11,6 +11,7 @@
 
   <properties>
     <project-build-plugin>12.0.1-SNAPSHOT</project-build-plugin>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 
   <pluginRepositories>
diff --git a/error-handling/error-handling-demos/.settings/org.eclipse.core.resources.prefs b/error-handling/error-handling-demos/.settings/org.eclipse.core.resources.prefs
deleted file mode 100644
index 99f26c020..000000000
--- a/error-handling/error-handling-demos/.settings/org.eclipse.core.resources.prefs
+++ /dev/null
@@ -1,2 +0,0 @@
-eclipse.preferences.version=1
-encoding/<project>=UTF-8
diff --git a/error-handling/error-handling-demos/pom.xml b/error-handling/error-handling-demos/pom.xml
index 6eb85bebd..090c99a91 100644
--- a/error-handling/error-handling-demos/pom.xml
+++ b/error-handling/error-handling-demos/pom.xml
@@ -11,6 +11,7 @@
 
   <properties>
     <project-build-plugin>12.0.1-SNAPSHOT</project-build-plugin>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 
   <build>
diff --git a/html-dialog/html-dialog-demos-test/pom.xml b/html-dialog/html-dialog-demos-test/pom.xml
index bc8e04ce9..651a11304 100644
--- a/html-dialog/html-dialog-demos-test/pom.xml
+++ b/html-dialog/html-dialog-demos-test/pom.xml
@@ -9,6 +9,7 @@
   <properties>
     <project-build-plugin>12.0.1-SNAPSHOT</project-build-plugin>
     <web.tester.version>12.0.0</web.tester.version>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 
   <pluginRepositories>
diff --git a/html-dialog/html-dialog-demos/.settings/org.eclipse.core.resources.prefs b/html-dialog/html-dialog-demos/.settings/org.eclipse.core.resources.prefs
deleted file mode 100644
index 99f26c020..000000000
--- a/html-dialog/html-dialog-demos/.settings/org.eclipse.core.resources.prefs
+++ /dev/null
@@ -1,2 +0,0 @@
-eclipse.preferences.version=1
-encoding/<project>=UTF-8
diff --git a/html-dialog/html-dialog-demos/pom.xml b/html-dialog/html-dialog-demos/pom.xml
index 92a423760..f939be5cd 100644
--- a/html-dialog/html-dialog-demos/pom.xml
+++ b/html-dialog/html-dialog-demos/pom.xml
@@ -12,6 +12,7 @@
 
   <properties>
     <project-build-plugin>12.0.1-SNAPSHOT</project-build-plugin>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 
   <build>
diff --git a/quick-start-tutorial/quick-start-tutorial/.settings/org.eclipse.core.resources.prefs b/quick-start-tutorial/quick-start-tutorial/.settings/org.eclipse.core.resources.prefs
deleted file mode 100644
index 99f26c020..000000000
--- a/quick-start-tutorial/quick-start-tutorial/.settings/org.eclipse.core.resources.prefs
+++ /dev/null
@@ -1,2 +0,0 @@
-eclipse.preferences.version=1
-encoding/<project>=UTF-8
diff --git a/quick-start-tutorial/quick-start-tutorial/pom.xml b/quick-start-tutorial/quick-start-tutorial/pom.xml
index 01c1e54b4..1b7b6871b 100644
--- a/quick-start-tutorial/quick-start-tutorial/pom.xml
+++ b/quick-start-tutorial/quick-start-tutorial/pom.xml
@@ -11,6 +11,7 @@
 
   <properties>
     <project-build-plugin>12.0.1-SNAPSHOT</project-build-plugin>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 
   <build>
diff --git a/rule-engine/rule-engine-demos-test/pom.xml b/rule-engine/rule-engine-demos-test/pom.xml
index 2e0e23859..6398f7812 100644
--- a/rule-engine/rule-engine-demos-test/pom.xml
+++ b/rule-engine/rule-engine-demos-test/pom.xml
@@ -9,6 +9,7 @@
   <properties>
     <project-build-plugin>12.0.1-SNAPSHOT</project-build-plugin>
     <web.tester.version>12.0.0</web.tester.version>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 
   <pluginRepositories>
diff --git a/rule-engine/rule-engine-demos/.settings/org.eclipse.core.resources.prefs b/rule-engine/rule-engine-demos/.settings/org.eclipse.core.resources.prefs
deleted file mode 100644
index 99f26c020..000000000
--- a/rule-engine/rule-engine-demos/.settings/org.eclipse.core.resources.prefs
+++ /dev/null
@@ -1,2 +0,0 @@
-eclipse.preferences.version=1
-encoding/<project>=UTF-8
diff --git a/rule-engine/rule-engine-demos/pom.xml b/rule-engine/rule-engine-demos/pom.xml
index 0b545a1ca..6b8fb4dd7 100644
--- a/rule-engine/rule-engine-demos/pom.xml
+++ b/rule-engine/rule-engine-demos/pom.xml
@@ -14,6 +14,7 @@
 
   <properties>
     <project-build-plugin>12.0.1-SNAPSHOT</project-build-plugin>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 
   <build>
diff --git a/workflow/workflow-demos-test/pom.xml b/workflow/workflow-demos-test/pom.xml
index cf72b975f..5f747a78b 100644
--- a/workflow/workflow-demos-test/pom.xml
+++ b/workflow/workflow-demos-test/pom.xml
@@ -9,6 +9,7 @@
   <properties>
     <project-build-plugin>12.0.1-SNAPSHOT</project-build-plugin>
     <web.tester.version>12.0.0</web.tester.version>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 
   <pluginRepositories>
diff --git a/workflow/workflow-demos/.settings/org.eclipse.core.resources.prefs b/workflow/workflow-demos/.settings/org.eclipse.core.resources.prefs
deleted file mode 100644
index 99f26c020..000000000
--- a/workflow/workflow-demos/.settings/org.eclipse.core.resources.prefs
+++ /dev/null
@@ -1,2 +0,0 @@
-eclipse.preferences.version=1
-encoding/<project>=UTF-8
diff --git a/workflow/workflow-demos/pom.xml b/workflow/workflow-demos/pom.xml
index 787cfe08a..4cd3c1096 100644
--- a/workflow/workflow-demos/pom.xml
+++ b/workflow/workflow-demos/pom.xml
@@ -11,6 +11,7 @@
 
   <properties>
     <project-build-plugin>12.0.1-SNAPSHOT</project-build-plugin>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 
   <build>