Introduce ObjectUtils class

Author: s17t

app/src/processing/app/ObjectUtil.java

@@ -0,0 +1,13 @@
+package processing.app;
+
+public class ObjectUtil {
+	
+	public static boolean isNull(Object o) {
+		return o == null;
+	}	
+	
+	public static <T> T defaultIfEmpty(T obj, T defaultObj) {
+		if (isNull(obj)) return defaultObj;
+		return obj;
+	}
+}