Java

What types of encryption algorithms do you know?

Tell me about the Stream API

What is an anonymous class?

Tell me about the class loaders (ClassLoader)

What are the methods of authorization you know?

How are threads started? What are the primary objects for starting?

Tell me about the Concurrency API — group of classes.

How does the class loading process work when a method encounters an unknown class at runtime?

What is the advantage of reactive programming?

What steps need to be taken to sign a byte array with a digital signature?

The left table has 5 records, the right table has 10 records. The ON condition is 1=1. How many records are in the result for LEFT JOIN and INNER JOIN?

How can you identify a loaded class in JVM? By which attributes?

What authentication methods do you know?

How is an anonymous class object created?

What is an electronic digital signature (EDS)?

What are the input parameters of the defineClass method?

What is a lambda function?

REST method with authentication via Spring Security. Need to run processing in a separate thread, return OK, but preserve SecurityContext for use in the thread.

How does a lambda function differ from an anonymous class?

How does LEFT JOIN differ from INNER JOIN?