Oracle Software Development Engineer In Test interview questions

Got interview call directly from the HR team of Oracle Hyd, this was regarding an SDET (Java+Selenium) position with guys having 4+ years of experience. Interviewer directly rolled into the process, it was a hot day and interview happened in their campus but in a non AC cabin and no water as well to ask for. Questions: JAVA: 1) Write a java program (using pen paper. no system, no eclipse IDE to help), to take an input from user and return whether its a well ordered number or not.. 2) Write a java program to find the biggest palindrome of the string entered by the user. Ex:: User input is ABABABAAAB This string has following palindromes, ABA, BAB, BAAAB Our program should return the biggest string of these i.e, BAAAB 3) Explain public static void main 4) Can a static variable be called from a non static method. 5) Explain system.out.println 6) Explain Packages with examples 7) Explain Libraries with examples 8) Is it necessary to have public in main method? 9) How to we execute some code before main method if we want to? SELENIUM: 1) WebDriver architecture on paper. 2) Wait statements in webDriver 3) How to handle Window Alerts? (Not JS alerts on webpages) 4) What are capabilities in selenium and what parameters does it take. 5) How to use RC commands in WebDriver.