Delegating Methods to Components

Medium Composition & Aggregation

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Problem Statement

Create a `Logger` class with a `write(msg)` method that prints ‘LOG: [msg]’. Create an `App` class that instantiates `Logger` using composition. The `App` should have an `execute(msg)` method that delegates the logging task to its `Logger` component by calling `write()`.

Input Format

A single string message.

Output Format

Print the log message.

Constraints

None

Sample Input

System Started

Sample Output

LOG: System Started

Explanation

Delegation allows a parent class to expose functionality that is actually handled by its internal component objects.

Starter Code

class Logger:
    pass

class App:
    pass

if __name__ == '__main__':
    msg = input().strip()
    # Instantiate App and call execute
    pass

Limits

Time Limit: 1s
Memory Limit: 256MB

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