In Java 8, the map() and flatMap() methods are used to manipulate elements of a stream. The map() method applies a given function to each element of a stream and returns a new stream containing the results. The returned stream is of the same size as the original stream. Here’s an example: In this example, …
Category: Java8
Windows – How to get my local ip ?
To get your local IP address on a Windows computer, you can follow these steps: Note: Your local IP address may change over time or when you connect to a different network.
Java8 map() vs reduce() ? wpaccuracy.com
The Java 8 streams API provides two important operations to work with the data in a stream: map() and reduce(). These operations have different purposes and can be used together to transform and process data in a stream. The map() operation is used to transform each element in the stream into another element. It takes …
How to handle Null Values in Java8 Streams? wpaccuracy.com
Handling null values in Java 8 streams can be done in different ways depending on what you want to achieve. One approach is to filter out null values from the stream using the filter() method. Here’s an example: In this example, the filter() method is used to remove the null values from the stream, resulting …
Java8 Optional class, usage and advantages ? wpaccuracy.com
Java 8 introduced the Optional class, which is a container object that may or may not contain a non-null value. It is a way of representing an optional value, which means a value that may or may not be present. The advantage of using Optional is that it can help avoid null pointer exceptions, which …