Using @Autowired with setter method

Here you can annotate the setter method's setAccountRepository and setTransferRepository with the @Autowired annotation. This annotation can be used with any method. There is no specific reason to use it with the setter method only. Please refer to the following code:

    public class TransferServiceImpl implements TransferService { 
      //... 
      @Autowired 
      public void setAccountRepository(AccountRepository  
      accountRepository) { 
        this.accountRepository = accountRepository; 
      } 
      @Autowired 
      public void setTransferRepository(TransferRepository 
      transferRepository) { 
        this.transferRepository = transferRepository; 
      } 
      //... 
    }