The point of an object mapper is to give you type safety. Alternatively, we can also allow the client to decide how to handle empty by returning Optional from this method: public Optional findOptionalFirst() { return getList().stream() .findFirst(); } Therefore, if the result of getList is empty, this method will return an empty Optional to the client. Why can you not divide both sides of the equation, when working with exponential functions. 589). What is the state of the art of splitting a binary file by size? To check if an object is empty, check if the length of the array is 0. If it finds one that is not null, method will return false. @RuchiraGayanRanaweera - I kind of disagree.. @JavaCurious m.getName will throw NPE when m is null or if you do something silly in getName method. 1. if null check not mandatory for some fields then exclude it from toString() method as in my above code, I h An "empty object" is pretty ambiguous in java terms. Why can you not divide both sides of the equation, when working with exponential functions? Sorted by: 8. It will be equal to an empty object string if it is: JSON.stringify (value) === ' {}'. So i want to do a null safe check on a value contained within a value. So I want to check if there is data arrived in object or not. We can check whether a particular String is empty or not, using isBlank () method of the StringUtils class. Below is the code to check whether any of the key's value has null, you can change stream config to all match or any match as per your requirement, Just replace isNullOrEmpty method i have used with proper null or empty check condition for that particular collection. Best way to check for null values in Java? or. I consider this preferable to doing something that involves constructing streams or lists, because it's just simple: it's using very basic language features that are easily understandable by even a novice programmer. Excel Needs Key For Microsoft 365 Family Subscription. How to check for any null field of Object in List