java.util.Objects.isNull vs object == null

should use object == null over Objects.isNull() in a if statement?

If you look at the source code of IsNull method,

 /* Returns true if the provided reference is null otherwise returns false.*/

 public static boolean isNull(Object obj) {
     return obj == null;
 }

It is the same. There is no difference. So you can use it safely.

Look at the source:

public static boolean isNull(Object obj) {
    return obj == null;
}

To check for null values, you can use:

• Objects.isNull(myObject)
• null == myObject // avoids assigning by typo
• myObject == null // risk of typo

The fact that Objects.isNull is meant for Predicates does not prevent you from using it as above.

Objects.isNull is intended for use within Java 8 lambda filtering.

It's much easier and clearer to write:

.stream().filter(Objects::isNull) 

than to write:

.stream().filter(x -> x == null).  

Within an if statement, however, either will work. The use of == null is probably easier to read but in the end it will boil down to a style preference.