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1¡¢Stringaddress=Keys.toChecksumAddress(Keys.getAddress(ECKeyPair.create(Numeric.toBigInt(privateKey))));

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3¡¢ECKeyPair.create(BigIntbigint);

4¡¢Keys.getAddress(ECKeyPaireckeyPair):

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7¡¢Keys.toChecksumAddress(Stringaddress);

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10¡¢importorg.web3j.crypto.ECKeyPair;

11¡¢importorg.web3j.utils.Numeric;

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