Multi Threading fix?

Take a sledgehammer and make every method synchronized because I do not feel like learning how multi-threading works so make everything thread safe. A perfect solution. 50% chance this gets reverted. Although the next solution is just make every variable volatile and I don't know where I'm going with this description.

src/main/java/frc/team3128/ConstantsInt.java

@@ -83,7 +83,7 @@ private static void initTempConstants() {
     }
 
     //Change the value of a constant
-    public static void updateConstant(String category, String name, String value) throws IllegalArgumentException {
+    public static synchronized void updateConstant(String category, String name, String value) throws IllegalArgumentException {
         String callerClass = Thread.currentThread().getStackTrace()[2].getClassName();
         if(!callerClass.equals("frc.team3128.common.narwhaldashboard.NarwhalDashboard")) throw new IllegalArgumentException("Caller class is not valid!");
         Class<?> clazz = categories.get(category);  //Get the specified Constant class
@@ -132,12 +132,12 @@ private static Object parseData(String value) {
     }
 
     //Return each field of a constants class
-    public static ArrayList<Field> getConstantInfo(String category) {
+    public static synchronized ArrayList<Field> getConstantInfo(String category) {
         return editConstants.get(category);
     }
 
     //Make a constant editable
-    public static void addConstant(String category, String name) throws IllegalArgumentException{
+    public static synchronized void addConstant(String category, String name) throws IllegalArgumentException{
         try {
             Field field = categories.get(category).getField(name); 
             try {