Java

What happens if a class intended for use as a key in a collection has conflicting definitions of equals and hashCode methods?

Can you explain how data deduplication works and what it is used for?

What is the difference between an enumerator and an iterator in Java?

What is the significance of the final modifier for declared classes and interfaces in Java?

How does the class loading process occur in JVM during Java program execution?

How is error and exception handling implemented in Java?

Junior — Middle

СБЕРДрайв Клик

How can data transfer be implemented using streams?

Where inside the object can you find an additional link?

Can you explain what Singleton is when initializing a Bean in the context of development?

If an exception occurs during division by zero in a method, and the catch block returns an error, and the finally block returns the string 'finally', what will the method return?

What happens if you insert the eleventh element into an ArrayList that already contains ten elements?

Can you list the types of errors that can occur when programming in Java?

What method can be used to ensure the hiding of a password within a class for data protection?

Can you list the main types of blocks used for initial data initialization in programming?

What pattern is used in implementing classic JavaBean components?

Will a compilation error occur when dividing by zero in a try block if catch throws an exception and finally returns the string "finally"?

How can you change the internal state of a private variable of an object without using public methods like set?

In what situations and for what purposes is enumeration used in programming?

Will the program successfully run after adding new files containing main functions?

At what stage of execution does the code inside the constructor and its static method run?