Poprawka w toString() w nadklasie za pomocą refleksji

PC27-Hibernate/src/main/java/sklep/model/WspolnaNadklasa.java

 package sklep.model;
 
+import java.lang.reflect.Field;
+
 abstract class WspolnaNadklasa {
+	@Override
+	public String toString() {
+		StringBuilder result = new StringBuilder();
+		Class<? extends WspolnaNadklasa> klasa = this.getClass();
+		result.append(klasa.getSimpleName()).append(" [");
+		int fieldNo = 0;
+
+		for(Field field : klasa.getDeclaredFields())
+	    try {
+			if(fieldNo++ > 0) {
+				result.append(", ");
+			}
+		    Object value;
+			if(field.trySetAccessible()) {
+				value = field.get(this);
+			} else {
+				value = "!";
+			}
+			result.append(field.getName()).append('=').append(value);
+		} catch (IllegalArgumentException | IllegalAccessException e) {
+			System.err.println(e);
+		}
+		result.append("]");
+
+		return result.toString();
+	}
 
 }

PC30-SklepSpring/src/main/java/sklep/model/WspolnaNadklasa.java

@@ -8,15 +8,22 @@ abstract class WspolnaNadklasa {
 		StringBuilder result = new StringBuilder();
 		Class<? extends WspolnaNadklasa> klasa = this.getClass();
 		result.append(klasa.getSimpleName()).append(" [");
+		int fieldNo = 0;
 
-		for(Field field : klasa.getDeclaredFields()) {
+		for(Field field : klasa.getDeclaredFields())
 	    try {
-				// FIXME
-				//Object value = field.get(this);
-				result.append(field.getName()).append('=').append(", ");
-			} catch (IllegalArgumentException e) {
-				System.err.println(e);
+			if(fieldNo++ > 0) {
+				result.append(", ");
+			}
+		    Object value;
+			if(field.trySetAccessible()) {
+				value = field.get(this);
+			} else {
+				value = "!";
 			}
+			result.append(field.getName()).append('=').append(value);
+		} catch (IllegalArgumentException | IllegalAccessException e) {
+			System.err.println(e);
 		}
 		result.append("]");