### Question:
CuratorZookeeperClient extends AbstractZookeeperClient<CuratorWatcher> { @Override public boolean checkExists(String path) { try { if (client.checkExists().forPath(path) != null) { return true; } } catch (Exception e) { } return false; } CuratorZookeeperClient(URL url); @Override void createPersistent(String path); @Override void createEphemeral(String path); @Override void delete(String path); @Override List<String> getChildren(String path); @Override boolean checkExists(String path); @Override boolean isConnected(); @Override String doGetContent(String path); @Override void doClose(); @Override CuratorWatcher createTargetChildListener(String path, ChildListener listener); @Override List<String> addTargetChildListener(String path, CuratorWatcher listener); @Override void removeTargetChildListener(String path, CuratorWatcher listener);  }### Answer:
@Test public void testCheckExists() { String path = "/dubbo/org.apache.dubbo.demo.DemoService/providers"; curatorClient.create(path, false); assertThat(curatorClient.checkExists(path), is(true)); assertThat(curatorClient.checkExists(path + "/noneexits"), is(false)); }