Preferred Java way to ping an HTTP URL for availability

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How to handle back button using spring security?

Cannot change version of project facet Dynamic Web Module to 3.0?

java.lang.IllegalStateException: UT010026: Async is not supported for this request, as not all filters or Servlets were marked as supporting async

// servlet.setAsyncSupported(true); // only this one required

Find List of Object passing String of Array Using java 8?

Simple way to find List of Object

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Jboss perfectly working @RequestScoped

Getting Excetption

How to search a collection using lambda expression in Java?

Get List Index

It returns an Optional so you will need to test it to see if a value is present. Or you can use orElse(null) if you prefer to get a null back on a failed search.

This will return an Optional which might or might not contain a value. If you want to get rid of the Optional altogether:

The filter() operation is an intermediate operation which returns a lazy stream, so there’s no need to worry about the entire array being filtered even after a match is encountered.