SimpleToken.sol

pragma solidity ^0.5.0;

import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/token/ERC20/ERC20Detailed.sol";
import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/token/ERC20/ERC20.sol";


/**
 * @title SimpleToken
 * @dev Very simple ERC20 Token example, where all tokens are pre-assigned to the creator.
 * Note they can later distribute these tokens as they wish using `transfer` and other
 * `ERC20` functions.
 */
contract SimpleToken is ERC20, ERC20Detailed {

  uint256 public constant INITIAL_SUPPLY = 10000 * (10 ** 18);

  /**
   * @dev Constructor that gives msg.sender all of existing tokens.
   */
  constructor() public ERC20Detailed("JeffToken", "JEFF", 18) {
    _mint(msg.sender, INITIAL_SUPPLY);
  }

}