Warning: Using contract member "balance" inherited from the address type is deprecated

Question

browser/ballot.sol:61:13: Warning: Using contract member "balance" inherited from the address type is deprecated. Convert the contract to "address" type to access the member. require(this.balance >= 1000000000000000);

What does it mean "convert the contract to address" type? How do I get the address of this?

I got this error in 0.4.21 of Solidity through Remix browser.

Answer 1

Try require(address(this).balance >= 1000000000000000)

Answer 2

Just assign 'this' to a local variable

address myAddress = this;
require(myAddress.balance >= 1000000000000000);

Answer 3

using

address(this).balance 

is the correct approach