Publish smart contracts and get the address String address , depolyUFOTokenTest (); 3, get the balance of smart contract getUFOTokenContractBalance (); Check the specified address of the erc20 balance String queryAdress s "0xd8ACcED8A7A92b334007f9C6127A848fE51D3C3b"; 4, check the smart contract and print the relevant information checkUFOTokenContract (queryAddress); 5, transfer String to Address , "0x6cb988b9ce48Fd3b5a328B582d64F5C10d0E114"; transferUFOTokenContract ("toAddress, 133333330000000000000000000000"); 5.2 Check Balance //checkUFOTokenContract (contractAddress, toAddress)