R4.10 What are the values of the following expressions? In each line, assume that String s = "Hello"; String t = "World"; a. s.length() + t.length() b. s.substring(1, 2) c. s.substring(s.length() / 2, s.length()) d. s + t e. t + s

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
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R4.10

What are the values of the following expressions? In each line, assume that

String s = "Hello"; String t = "World";

a. s.length() + t.length()
b. s.substring(1, 2)
c. s.substring(s.length() / 2, s.length()) d. s + t
e. t + s

 

Expert Solution
Step 1

Introduction

In programming, two of the most frequently used functions are length() and substring().To figure out how many characters are in string, use the length() method. The substring() function is used to take two indices, or two positions  inside the string, and extract piece of the string.

 

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