1. technical interview 2. machine round 3. HR round techinal round will be most question asked from core java very bad interview process they give me question in machine round that experience level. question of machine round below-: 1. Write a Program to insert String and String Buffer Object into the TreeSet where sorting order is increasing length order if two Objects having the same length then consider their alphabetical order. Example String Object - A, XX, ZZZ, String Buffer - ABC , AA, ABCD, Final Answer – A, AA,XX,ABC ZZZ,ABCD 2. Remove all elements but at the only one elements will remove and if the elements is duplicate then remove one. Till array got empty. And print how many time on get array empty. Array – [1,1,1,2,2,5,0,0,6] 3. Insert 15 element print 3 elements then sleep for 2 sec then print next three using array. 4. Make a list of object in which same gst then amount will merge. for example :- a. Samsung 40000 18% b. vivo 27500 18% c. earphone 1500 12% d. cookies 100 5% 5. we have data of date wise wrt amount we have show only monthly data. for example :- 01-04-2023 23000.00 05-04-2023 17000.00 09-09-2023 12300.00 07-07-2023 34200.00 07-06-2023 5400.00 . 6.make a program :- list = [2,3,4,5,6,8,9] input any num = 2 output list = [8,9,2,3,4,5,6] 7. CURD Operation (If record insert that time Id type String And patten like STR101,STR102 ......... )