Consider these declarations: String s1 = "crab"; String s2 = new String ("crab"); String s3 s1; Which expression involving these strings evaluates to true? II s1.equals (s2) III s3.equals (s2) (B) II only (C) II and III only

Consider these declarations: String s1 = "crab"; String s2 = new String ("crab"); String s3 s1; Which expression involving these strings evaluates to true? II s1.equals (s2) III s3.equals (s2) (B) II only (C) II and III only

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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Concept explainers

Methods of StringBuilder class

The StringBuilder class can be used to create mutable strings. The methods defined in the StringBuilder class are widely used to manipulate and concatenate strings. It is a non-synchronized class which has public methods that can be accessed by multiple threads. It is not thread-safe.

Question

Consider these declarations:
String s1 = "crab";
String s2 = new String ("crab");
String s3 = s1;
Which expression involving these strings evaluates to true?
II s1.equals (s2)
III s3.equals (s2)
(B) II only
(C) II and III only

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