public List<Bucket> listBuckets() throws CosClientException, CosServiceException;

// 如果只调用 listBuckets 方法，则创建 cosClient 时指定 region 为 new Region("") 即可
List<Bucket> buckets = cosClient.listBuckets();
for (Bucket bucketElement : buckets) {
    String bucketName = bucketElement.getName();
    String bucketLocation = bucketElement.getLocation();
}

public Bucket createBucket(String  bucketName) throws CosClientException, CosServiceException;

String bucket = "examplebucket-1250000000"; //存储桶名称，格式：BucketName-APPID
CreateBucketRequest createBucketRequest = new CreateBucketRequest(bucket);
// 设置 bucket 的权限为 Private(私有读写), 其他可选有公有读私有写, 公有读写
createBucketRequest.setCannedAcl(CannedAccessControlList.Private);
Bucket bucketResult = cosClient.createBucket(createBucketRequest);

public boolean doesBucketExist(String bucketName) 
  throws CosClientException, CosServiceException;

// bucket的命名规则为 BucketName-APPID ，此处填写的存储桶名称必须为此格式
String bucketName = "examplebucket-1250000000";
boolean bucketExistFlag = cosClient.doesBucketExist(bucketName);

public void deleteBucket(String bucketName) throws CosClientException, CosServiceException;

// bucket的命名规则为 BucketName-APPID ，此处填写的存储桶名称必须为此格式
String bucketName = "examplebucket-1250000000";
cosClient.deleteBucket(bucketName);