ERC20 token balance

Using this getTokenBalance function you can get token balance of provided walletAddress:

wallet_addressStringThe address starts with “0x” and is followed by a series of 40 random characters.
wallet_passwordStringThe password which you set up already for your wallet.
erc20_token_contract_addressStringThe erc20 token contract address is the address of the place where your token is preserved. It is a hexadecimal notion of your public key which always starts with '0x'. You have a home address that depicts your presence at a particular location.
EthManager ethManager = EthManager.getInstance();
String walletAddress = "{{wallet_address}}";
String password = "{{wallet_password}}";
String erc20TokenContractAddress = "{{erc20_token_contract_address}}";
ethManager.getTokenBalance(walletAddress, password, erc20TokenContractAddress, this)
                .subscribe(balance -> {

                    Toast.makeText(this, "Token Balance : " + balance, Toast.LENGTH_SHORT).show();

                }, error -> {