(a) What will be the output of the following method calls? Set s = new HashSet(); s.add ("hello"); s.add("bye"); s.addAll(s); Set t = new HashSet(); t.add("123"); s.addAll(t); System.out.println(s.containsAll(t)); System.out.println(t.containsAl1(s)); System.out.println(s.contains ("ace")); System.out.println(s.contains("123")); s.retainAll1(t); System.out.println(s.contains("123")); t.retainAll(s); System.out.println(t.contains("123"));

(a) What will be the output of the following method calls? Set s = new HashSet(); s.add ("hello"); s.add("bye"); s.addAll(s); Set t = new HashSet(); t.add("123"); s.addAll(t); System.out.println(s.containsAll(t)); System.out.println(t.containsAl1(s)); System.out.println(s.contains ("ace")); System.out.println(s.contains("123")); s.retainAll1(t); System.out.println(s.contains("123")); t.retainAll(s); System.out.println(t.contains("123"));

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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