diff --git a/.classpath b/.classpath
index 653dfd7..278fc60 100644
--- a/.classpath
+++ b/.classpath
@@ -12,22 +12,9 @@
 			<attribute name="optional" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
-		<attributes>
-			<attribute name="optional" value="true"/>
-			<attribute name="maven.pomderived" value="true"/>
-			<attribute name="test" value="true"/>
-		</attributes>
-	</classpathentry>
-	<classpathentry excluding="**" kind="src" output="target/test-classes" path="src/test/resources">
-		<attributes>
-			<attribute name="maven.pomderived" value="true"/>
-			<attribute name="test" value="true"/>
-			<attribute name="optional" value="true"/>
-		</attributes>
-	</classpathentry>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
@@ -38,19 +25,19 @@
 	</classpathentry>
 	<classpathentry kind="src" path="target/generated-sources/annotations">
 		<attributes>
+			<attribute name="ignore_optional_problems" value="true"/>
 			<attribute name="optional" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
-			<attribute name="ignore_optional_problems" value="true"/>
 			<attribute name="m2e-apt" value="true"/>
 		</attributes>
 	</classpathentry>
 	<classpathentry kind="src" output="target/test-classes" path="target/generated-test-sources/test-annotations">
 		<attributes>
+			<attribute name="ignore_optional_problems" value="true"/>
+			<attribute name="test" value="true"/>
 			<attribute name="optional" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
-			<attribute name="ignore_optional_problems" value="true"/>
 			<attribute name="m2e-apt" value="true"/>
-			<attribute name="test" value="true"/>
 		</attributes>
 	</classpathentry>
 	<classpathentry kind="output" path="target/classes"/>
diff --git a/.settings/org.eclipse.core.resources.prefs b/.settings/org.eclipse.core.resources.prefs
new file mode 100644
index 0000000..99f26c0
--- /dev/null
+++ b/.settings/org.eclipse.core.resources.prefs
@@ -0,0 +1,2 @@
+eclipse.preferences.version=1
+encoding/<project>=UTF-8
diff --git a/src/main/java/org/lapaloma/hogwarts/service/CasaService.java b/src/main/java/org/lapaloma/hogwarts/service/CasaService.java
index 17b195d..879134b 100644
--- a/src/main/java/org/lapaloma/hogwarts/service/CasaService.java
+++ b/src/main/java/org/lapaloma/hogwarts/service/CasaService.java
@@ -3,10 +3,31 @@
  */
 package org.lapaloma.hogwarts.service;
 
-/**
-* Isidoro Nevares Martín - Virgen de la Paloma
-* Fecha creación: 9 mar 2026
-*/
-public class CasaService {
+import org.lapaloma.hogwarts.vo.Casa;
 
+/**
+ * Isidoro Nevares Martín - Virgen de la Paloma Fecha creación: 9 mar 2026
+ */
+public class CasaService {
+	public boolean tieneNombre(Casa casa) {
+		if (casa == null) {
+			return false;
+		}
+		String nombre = casa.getNombre();
+		return nombre != null && !nombre.trim().isEmpty();
+	}
+
+	public String obtenerNnombreEnMayusculas(Casa casa) {
+		if (!tieneNombre(casa)) {
+			return null;
+		}
+		return casa.getNombre().toUpperCase();
+	}
+
+	public boolean esCasaValida(Casa casa) {
+		if (casa == null || casa.getIdentificador() <= 0) {
+			return false;
+		}
+		return tieneNombre(casa);
+	}
 }
diff --git a/src/main/java/org/lapaloma/hogwarts/vo/Casa.java b/src/main/java/org/lapaloma/hogwarts/vo/Casa.java
index 2351e6b..55722d3 100644
--- a/src/main/java/org/lapaloma/hogwarts/vo/Casa.java
+++ b/src/main/java/org/lapaloma/hogwarts/vo/Casa.java
@@ -10,27 +10,28 @@ package org.lapaloma.hogwarts.vo;
  * 
  */
 public class Casa {
-        private int identificador;
-        String nombre;
-        
-        
-        
-        public int getIdentificador() {
-            return identificador;
-        }
-        public void setIdentificador(int identificador) {
-            this.identificador = identificador;
-        }
-        public String getNombre() {
-            return nombre;
-        }
-        public void setNombre(String nombre) {
-            this.nombre = nombre;
-        }
-        @Override
-        public String toString() {
-            return "Casa [identificador=" + identificador + ", nombre=" + nombre + "]";
-        }
-        
-        
+	private int identificador;
+	String nombre;
+
+	public int getIdentificador() {
+		return identificador;
+	}
+
+	public void setIdentificador(int identificador) {
+		this.identificador = identificador;
+	}
+
+	public String getNombre() {
+		return nombre;
+	}
+
+	public void setNombre(String nombre) {
+		this.nombre = nombre;
+	}
+
+	@Override
+	public String toString() {
+		return "Casa [identificador=" + identificador + ", nombre=" + nombre + "]";
+	}
+
 }