Exception Propagation: Point Usage Validation System

In this problem, you will create a program that reads balance points and usage points from standard input, throws IllegalArgumentException in validatePointUsage() when usage exceeds balance, propagates the exception through usePoints() to main(), and displays the result to standard output.

Learning Objective: Learn to understand how exceptions propagate through method calls

Create a point card usage validation system. When usage points exceed balance points, throw IllegalArgumentException in the validatePointUsage() method, and observe how the exception propagates through the usePoints() method up to the main() method. Without explicitly catching the exception in each intermediate method, it automatically propagates to the caller.

Input

Line 1: Balance points
Line 2: Usage points

Output

=== Point Usage Validation ===
Balance: [balance]pt
Usage: [usage]pt
Validation: Success
━━━━━━━━━━━━━━━━
Status: Points used successfully

Or when exception occurs:

=== Point Usage Validation ===
Balance: [balance]pt
Usage: [usage]pt
Validation: Failed
━━━━━━━━━━━━━━━━
Error: Usage exceeds balance (required: [usage], available: [balance])

Examples

Example 1: Normal Point Usage (500/1000)

Input:

1000
500

Output:

=== Point Usage Validation ===
Balance: 1000pt
Usage: 500pt
Validation: Success
━━━━━━━━━━━━━━━━
Status: Points used successfully

Example 2: Balance Exceeded Error (1000/500)

Input:

500
1000

Output:

=== Point Usage Validation ===
Balance: 500pt
Usage: 1000pt
Validation: Failed
━━━━━━━━━━━━━━━━
Error: Usage exceeds balance (required: 1000, available: 500)

Example 3: Boundary Value (1000/1000)

Input:

1000
1000

Output:

=== Point Usage Validation ===
Balance: 1000pt
Usage: 1000pt
Validation: Success
━━━━━━━━━━━━━━━━
Status: Points used successfully