Fix usage of isEmpty.
diff --git a/jpa/plugins/org.eclipse.jpt.jpa.ui/src/org/eclipse/jpt/jpa/ui/internal/wizards/gen/GenerateEntitiesFromSchemaWizard.java b/jpa/plugins/org.eclipse.jpt.jpa.ui/src/org/eclipse/jpt/jpa/ui/internal/wizards/gen/GenerateEntitiesFromSchemaWizard.java
index a9d97d4..bad6263 100644
--- a/jpa/plugins/org.eclipse.jpt.jpa.ui/src/org/eclipse/jpt/jpa/ui/internal/wizards/gen/GenerateEntitiesFromSchemaWizard.java
+++ b/jpa/plugins/org.eclipse.jpt.jpa.ui/src/org/eclipse/jpt/jpa/ui/internal/wizards/gen/GenerateEntitiesFromSchemaWizard.java
@@ -37,6 +37,7 @@
 import org.eclipse.jpt.common.core.internal.utility.JDTTools;
 import org.eclipse.jpt.common.core.internal.utility.PlatformTools;
 import org.eclipse.jpt.common.ui.internal.dialogs.OptionalMessageDialog;
+import org.eclipse.jpt.common.utility.internal.StringTools;
 import org.eclipse.jpt.jpa.core.EntityGeneratorDatabaseAnnotationNameBuilder;
 import org.eclipse.jpt.jpa.core.JpaPlatform;
 import org.eclipse.jpt.jpa.core.JpaProject;
@@ -180,7 +181,7 @@
 				}
 			}
 		}
-		else if (newDefaultTable.getPackage().isEmpty()) {
+		else if (newDefaultTable.getPackage().equals(StringTools.EMPTY_STRING)) {
 			JpaEntityGenPreferencesManager preferencesManager = this.buildEntityGenPreferencesManager();
 			newDefaultTable.setPackage(preferencesManager.getDefaultPackageWorkspacePreference());
 		}