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Tag: java optional

  • NullPointerException in Java

    NullPointerException in Java

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    geonikpal
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    In this article, we will talk about the infamous NullPointerException Java Error and how to solve it. 1. What is Null in Java? The null is a keyword and it means that an object’s address points to nothing. Moreover, all objects in Java are null by default unless we initialize them. Finally, a primitive can…

  • Java 8 Optional

    Java 8 Optional

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    geonikpal
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    In this article, we’ll talk about Java 8 Optional class and how you can take full advantage, through detailed examples. 1. What is Optional in Java? Optional is a wrapper class that was introduced in Java 8, in order to have a more elegant way to handle null values. Also Optional works in conjunction with…