de.hftstuttgart.buildingphysics.application/META-INF/MANIFEST.MF

@@ -21,3 +21,4 @@ Require-Bundle: javax.inject;bundle-version="0.0.0",
 Import-Package: de.hftstuttgart.buildingphysics,
  javax.annotation;version="1.3.5"
 Automatic-Module-Name: de.hftstuttgart.buildingphysics.application
+Bundle-RequiredExecutionEnvironment: JavaSE-15

de.hftstuttgart.buildingphysics.edit/.project

@@ -20,8 +20,14 @@
 			<arguments>
 			</arguments>
 		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
 	</buildSpec>
 	<natures>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
 		<nature>org.eclipse.pde.PluginNature</nature>
 	</natures>

de.hftstuttgart.buildingphysics.edit/META-INF/MANIFEST.MF

@@ -15,3 +15,4 @@ Require-Bundle: org.eclipse.core.runtime,
  de.hftstuttgart.cityunits.model;bundle-version="1.0.1";visibility:=reexport,
  de.hftstuttgart.cityunits.model.edit;bundle-version="1.0.1";visibility:=reexport
 Bundle-ActivationPolicy: lazy
+Bundle-RequiredExecutionEnvironment: JavaSE-15

de.hftstuttgart.buildingphysics.viewmodel/.project

@@ -5,6 +5,11 @@
 	<projects>
 	</projects>
 	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
 		<buildCommand>
 			<name>org.eclipse.pde.ManifestBuilder</name>
 			<arguments>
@@ -20,9 +25,16 @@
 			<arguments>
 			</arguments>
 		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
 	</buildSpec>
 	<natures>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
 		<nature>org.eclipse.pde.PluginNature</nature>
 		<nature>org.eclipse.emfforms.ide.builder.viewModelNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
 	</natures>
 </projectDescription>

de.hftstuttgart.buildingphysics.viewmodel/META-INF/MANIFEST.MF

@@ -8,3 +8,4 @@ Require-Bundle: org.eclipse.emf.ecp.view.model.provider.xmi,
  org.eclipse.emf.ecp.view.treemasterdetail.ui.swt,
  de.hftstuttgart.cityunits.ui.renderer;bundle-version="1.0.1",
  de.hftstuttgart.cityunits.model;bundle-version="1.0.1"
+Bundle-RequiredExecutionEnvironment: JavaSE-15

de.hftstuttgart.buildingphysics/.project

@@ -20,8 +20,14 @@
 			<arguments>
 			</arguments>
 		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
 	</buildSpec>
 	<natures>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
 		<nature>org.eclipse.sirius.nature.modelingproject</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
 		<nature>org.eclipse.pde.PluginNature</nature>

de.hftstuttgart.buildingphysics/META-INF/MANIFEST.MF

@@ -14,3 +14,4 @@ Require-Bundle: org.eclipse.emf.ecore;visibility:=reexport,
  org.eclipse.core.runtime,
  de.hftstuttgart.cityunits.model;bundle-version="1.0.1";visibility:=reexport
 Bundle-ActivationPolicy: lazy
+Bundle-RequiredExecutionEnvironment: JavaSE-15