Web Reference: Before calling a function of an object, I need to check if the object is null, to avoid throwing a NullPointerException. What is the best way to go about this? I've considered these methods. Whic... Feb 12, 2024 · This tutorial explains the ways to check whether an object is null or not in Java. The null value in Java means the absence of a variable’s value. Technically, a variable containing null doesn’t point to any position in memory or wasn’t initialized yet. That can only occur with instance variables. Primitive variables such as int, double, and boolean can’t hold null. Checking for null variables in our programs is helpful to avoid ...
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