A little bit refactor

src/main/java/ru/betterend/config/ConfigKeeper.java

@@ -46,7 +46,6 @@ public final class ConfigKeeper {
 			for (String group: path) {
 				JsonElement element = obj.get(group);
 				if (element == null || !element.isJsonObject()) {
-					changed = true;
 					element = new JsonObject();
 					obj.add(group, element);
 				}
@@ -57,7 +56,7 @@ public final class ConfigKeeper {
 		String paramKey = key.getEntry();
 		paramKey += " [default: " + entry.getDefault() + "]";
 		
-		changed = entry.setLocation(obj, paramKey) || changed;
+		this.changed = entry.setLocation(obj, paramKey);
 	}
 	
 	private <T, E extends Entry<T>> void storeValue(E entry, T value) {

src/main/java/ru/betterend/config/ConfigKey.java

@@ -8,7 +8,7 @@ public class ConfigKey {
 	private final boolean root;
 	
 	public ConfigKey(String entry, String... path) {
-		validate(entry, path);
+		this.validate(entry);
 		this.path = path;
 		this.entry = entry;
 		this.root = path.length == 0 || (path.length == 1 && path[0].isEmpty());
@@ -74,7 +74,7 @@ public class ConfigKey {
 		return String.format("%s:%s", p, entry);
 	}
 	
-	private void validate(String entry, String... path) {
+	private void validate(String entry) {
 		if (entry == null) {
 			throw new NullPointerException("Config key must be not null!");
 		}

src/main/java/ru/betterend/config/PathConfig.java

@@ -19,6 +19,10 @@ public class PathConfig extends Config {
 		return new ConfigKey(key, category.split("\\."));
 	}
 	
+	protected ConfigKey createKey(String key) {
+		return new ConfigKey(key, "");
+	}
+	
 	@Nullable
 	public <T, E extends Entry<T>> E getEntry(String category, String key, Class<E> type) {
 		return this.getEntry(createKey(category, key), type);
@@ -88,58 +92,58 @@ public class PathConfig extends Config {
 	// From Root
 	
 	public String getStringRoot(String key, String defaultValue) {
-		return this.getString(createKey("", key), defaultValue);
+		return this.getString(createKey(key), defaultValue);
 	}
 
 	public String getStringRoot(String key) {
-		return this.getString(createKey("", key));
+		return this.getString(createKey(key));
 	}
 
 	public boolean setStringRoot(String key, String value) {
-		return this.setString(createKey("", key), value);
+		return this.setString(createKey(key), value);
 	}
 
 	public int getIntRoot(String key, int defaultValue) {
-		return this.getInt(createKey("", key), defaultValue);
+		return this.getInt(createKey(key), defaultValue);
 	}
 
 	public int getIntRoot(String key) {
-		return this.getInt(createKey("", key));
+		return this.getInt(createKey(key));
 	}
 
 	public boolean setIntRoot(String key, int value) {
-		return this.setInt(createKey("", key), value);
+		return this.setInt(createKey(key), value);
 	}
 
 	public boolean setRangedIntRoot(String key, int value) {
-		return this.setRanged(createKey("", key), value, IntegerRange.class);
+		return this.setRanged(createKey(key), value, IntegerRange.class);
 	}
 	
 	public boolean setRangedFloatRoot(String key, float value) {
-		return this.setRanged(createKey("", key), value, FloatRange.class);
+		return this.setRanged(createKey(key), value, FloatRange.class);
 	}
 
 	public float getFloatRoot(String key, float defaultValue) {
-		return this.getFloat(createKey("", key), defaultValue);
+		return this.getFloat(createKey(key), defaultValue);
 	}
 
 	public float getFloatRoot(String key) {
-		return this.getFloat(createKey("", key));
+		return this.getFloat(createKey(key));
 	}
 
 	public boolean setFloatRoot(String key, float value) {
-		return this.setFloat(createKey("", key), value);
+		return this.setFloat(createKey(key), value);
 	}
 
 	public boolean getBooleanRoot(String key, boolean defaultValue) {
-		return this.getBoolean(createKey("", key), defaultValue);
+		return this.getBoolean(createKey(key), defaultValue);
 	}
 
 	public boolean getBooleanRoot(String key) {
-		return this.getBoolean(createKey("", key));
+		return this.getBoolean(createKey(key));
 	}
 
 	public boolean setBooleanRoot(String key, boolean value) {
-		return this.setBoolean(createKey("", key), value);
+		return this.setBoolean(createKey(key), value);
 	}
 }