通过将代码放入finally子句中，可以确保执行代码块。

//来 自 n o w  j a v a  . c o m

import java.io.FileOutputStream;

import java.util.Random;

import java.util.concurrent.locks.Lock;

import java.util.concurrent.locks.ReentrantLock;


public class Main {

  static Lock myLock = new ReentrantLock();

  static Random random = new Random();

  

  public static void main(String[] args) {

    myLock.lock();

    try {

      int number = random.nextInt(5);

      int result = 100 / number;

      System.out.println("A result is " + result);

      try (FileOutputStream file = new FileOutputStream("file.out")) {

        file.write(result);

      }
      /*