What is Kibana? (Updated Guide For 2022)

null is a reserved word (keyword) in Java for literal values. It is a literal similar to the true and false. In Java, null is a keyword much like the other keywords public, static or final. It is just a value that shows that the object is referring to nothing. The invention of the word “null” originated to denote the absence of something. For example, the absence of the user, a resource, or anything. But, over the years it puts Java programmers in trouble due to the disturbing null pointer exception. When you declare a boolean variable, it gets its default value as false.

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