13 lines
416 B
Java
13 lines
416 B
Java
package adapter;
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/**
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* The Target interface — what YOUR application's code expects.
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* Every payment gateway in your system must implement this.
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* Written to handle modern async-style payment flows.
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*/
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public interface PaymentGateway {
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boolean charge(String customerId, double amount, String currency);
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boolean refund(String transactionId, double amount);
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String getStatus(String transactionId);
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}
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