Standard Library: String class Methods

In this problem, you will create a program that reads a string, a start index, and an end index from standard input, then calls length(), toUpperCase(), and substring() on the string to retrieve its length, convert it to uppercase, and extract a substring, then displays each result to standard output.

Learning Objective: Learn to use String class methods effectively for efficient string manipulation

Overview

For a string received from standard input, use multiple String class methods to retrieve and process information. Use length(), toUpperCase(), and substring() methods.

Input Format

string
startIndex
endIndex

Specifications

• Get length of the input string
• Convert to all uppercase
• Extract substring from startIndex to endIndex (exclusive)
• Output each result

Output Format

Length: [length]
UpperCase: [uppercase string]
Substring: [extracted substring]

Sample Input/Output

Input:
Hello World
0
5

Output:
Length: 11
UpperCase: HELLO WORLD
Substring: Hello