diff --git a/src/main/java/rife/validation/ValidityChecks.java b/src/main/java/rife/validation/ValidityChecks.java
index 31fe116..7680c0d 100644
--- a/src/main/java/rife/validation/ValidityChecks.java
+++ b/src/main/java/rife/validation/ValidityChecks.java
@@ -512,21 +512,26 @@ public static boolean checkJavaPackage(Object value) {
             return false;
         }
 
-        if (!(value instanceof String name)) {
-            return false;
-        }
-
-        if (name.startsWith(".") || name.endsWith(".")) {
+        if (!(value instanceof String name) || name.isBlank() || name.startsWith(".") || name.endsWith(".")) {
             return false;
         }
 
         var identifier = true;
         var it = new StringCharacterIterator(name);
+        var first = true;
         for (var c = it.first(); c != CharacterIterator.DONE; c = it.next()) {
-            if (!Character.isJavaIdentifierPart(c) && c != '.') {
-                identifier = false;
-                break;
+            if ((first && !Character.isJavaIdentifierStart(c)) ||
+                (!first && !Character.isJavaIdentifierPart(c))) {
+                if (c == '.') {
+                    first = true;
+                    continue;
+                }
+                else {
+                    identifier = false;
+                    break;
+                }
             }
+            first = false;
         }
 
         return identifier;
@@ -537,17 +542,20 @@ public static boolean checkJavaIdentifier(Object value) {
             return false;
         }
 
-        if (!(value instanceof String name)) {
+        if (!(value instanceof String name) || name.isBlank()) {
             return false;
         }
 
         var identifier = true;
+        var first = true;
         var it = new StringCharacterIterator(name);
         for (var c = it.first(); c != CharacterIterator.DONE; c = it.next()) {
-            if (!Character.isJavaIdentifierPart(c)) {
+            if ((first && !Character.isJavaIdentifierStart(c)) ||
+                (!first && !Character.isJavaIdentifierPart(c))) {
                 identifier = false;
                 break;
             }
+            first = false;
         }
 
         return identifier;
diff --git a/src/test/java/rife/validation/TestValidityChecks.java b/src/test/java/rife/validation/TestValidityChecks.java
index 9c5916c..1f97712 100644
--- a/src/test/java/rife/validation/TestValidityChecks.java
+++ b/src/test/java/rife/validation/TestValidityChecks.java
@@ -501,4 +501,34 @@ void testCheckFormat() {
         assertFalse(ValidityChecks.checkFormat("31/02/2004", RifeConfig.tools().getSimpleDateFormat("dd/MM/yyyy")));
         assertFalse(ValidityChecks.checkFormat("testing", RifeConfig.tools().getSimpleDateFormat("dd/MM/yyyy")));
     }
+
+    @Test
+    void testJavaPackage() {
+        assertFalse(ValidityChecks.checkJavaPackage(null));
+        assertFalse(ValidityChecks.checkJavaPackage(new Object()));
+        assertFalse(ValidityChecks.checkJavaPackage(""));
+        assertFalse(ValidityChecks.checkJavaPackage("."));
+        assertFalse(ValidityChecks.checkJavaPackage("a."));
+        assertFalse(ValidityChecks.checkJavaPackage(".a"));
+        assertFalse(ValidityChecks.checkJavaPackage("a.b."));
+        assertFalse(ValidityChecks.checkJavaPackage(".a.b"));
+        assertFalse(ValidityChecks.checkJavaPackage("1.a.b"));
+        assertFalse(ValidityChecks.checkJavaPackage("a.1b"));
+        assertTrue(ValidityChecks.checkJavaPackage("a"));
+        assertTrue(ValidityChecks.checkJavaPackage("a.b"));
+        assertTrue(ValidityChecks.checkJavaPackage("com.A1.bB"));
+    }
+
+    @Test
+    void testJavaIdentifier() {
+        assertFalse(ValidityChecks.checkJavaIdentifier(null));
+        assertFalse(ValidityChecks.checkJavaIdentifier(new Object()));
+        assertFalse(ValidityChecks.checkJavaIdentifier(""));
+        assertFalse(ValidityChecks.checkJavaIdentifier("."));
+        assertFalse(ValidityChecks.checkJavaIdentifier("1"));
+        assertFalse(ValidityChecks.checkJavaIdentifier("1b"));
+        assertTrue(ValidityChecks.checkJavaIdentifier("a"));
+        assertTrue(ValidityChecks.checkJavaIdentifier("A1"));
+        assertTrue(ValidityChecks.checkJavaIdentifier("bB"));
+    }
 }