Ventes Avenues interview questions

Core Java, Spring boot MySQL knowledge String, StringBuffer Difference What is String constant pool Controller and RESTController difference RequestParam and PathVariable Difference What is Spring MVC? Spring Boot? @Qualifier annotation means Explain below each line String s =" Hello "; s+="World"; s.trim() ; System.out.println(s) : ------------- Array given {1,2,3,4,5,6} expected output: 1,3,5 2,4,6