test11
```java package com.concurrency.cookbook.ch1; public class Calculator implements Runnable { private int number; public Calculator(int number) { this.number = number; } @Override public void run() { for (int i = 1; i < 10; i++) { System.out.printf("%s: %d * %d = %d\n", Thread.currentThread().getName(), number, i, i * number); } } } ```