BAEL-3385: Move article related code to its own package

persistence-modules/spring-boot-persistence-h2/src/main/java/com/baeldung/h2db/notnull/NotNullVsNullableApplication.java

@@ -0,0 +1,12 @@
+package com.baeldung.h2db.notnull;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class NotNullVsNullableApplication {
+
+    public static void main(String... args) {
+        SpringApplication.run(NotNullVsNullableApplication.class, args);
+    }
+}

persistence-modules/spring-boot-persistence-h2/src/main/java/com/baeldung/h2db/notnull/daos/ItemRepository.java

@@ -1,6 +1,6 @@
-package com.baeldung.h2db.springboot.daos;
+package com.baeldung.h2db.notnull.daos;
 
-import com.baeldung.h2db.springboot.models.Item;
+import com.baeldung.h2db.notnull.models.Item;
 import org.springframework.data.repository.CrudRepository;
 
 import java.math.BigDecimal;

persistence-modules/spring-boot-persistence-h2/src/main/java/com/baeldung/h2db/notnull/models/Item.java

@@ -1,4 +1,4 @@
-package com.baeldung.h2db.springboot.models;
+package com.baeldung.h2db.notnull.models;
 
 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;