Multi-Catch Input Parser

In this problem: You will create an InputParser class that converts user input strings into different types, and handle NumberFormatException, ArrayIndexOutOfBoundsException, and IllegalArgumentException that can occur in the parseAndProcess(String input) method using multi-catch syntax.

Learning Objective: Efficiently catch multiple exceptions using multi-catch syntax and understand how catch block ordering affects execution results

Overview

The InputParser class parses comma-separated input strings, converts the element at a specified index to an integer, and processes it. When the input is invalid, appropriate exceptions are thrown.

Specifications

InputParser Class (InputParser.java)

• Define a parseAndProcess(String input) method
  • Parameter: comma-separated string (format: "value1,value2,value3,...:index")
  • Split the string by colon (:), interpret the first part as the value array and the second part as the index
  • If input is null or empty, throw IllegalArgumentException (message: "Input must not be null or empty")
  • If no colon is present, throw IllegalArgumentException (message: "Input must contain ':' separator")
  • If the index part cannot be converted to an integer, NumberFormatException occurs
  • If the index is out of array bounds, ArrayIndexOutOfBoundsException occurs
  • On success, convert the value at the specified index to an integer and return "Parsed value: number"

Main Class (Main.java)

• Test 4 input patterns:
  1. Valid input: "10,20,30:1" - display value
  2. Number format error: "10,abc,30:1" - catch NumberFormatException
  3. Index out of bounds: "10,20,30:5" - catch ArrayIndexOutOfBoundsException
  4. Invalid input: "" - catch IllegalArgumentException
• Use try-catch for each test, implementing multi-catch (NumberFormatException | ArrayIndexOutOfBoundsException) and proper catch ordering

Output Format

--- Test 1: Valid input ---
Result: Parsed value: 20
--- Test 2: Number format error ---
Caught NumberFormatException | ArrayIndexOutOfBoundsException: For input string: "abc"
--- Test 3: Index out of bounds ---
Caught NumberFormatException | ArrayIndexOutOfBoundsException: Index 5 out of bounds for length 3
--- Test 4: Invalid input ---
Caught IllegalArgumentException: Input must not be null or empty