Pregunta de entrevista de T-Systems

Types of Stream in java What is parallel Stream Comparable and Comparator d/f What is AOP with Example What is System.out.println Rest API's best practices Can we delete an object by using GET Method Can we update an object by using GET Method What is status code for created what is the 400 code status How the spring boot application runs Auto-configuration annotations Promises and Observable d/f How to call REST API in Angular Program:- we have an employee object, it have name, id and address, We have to remove the duplicate objects and need to sort the employees as per Alphabets. by using Java8.