Initial commit

Exercise/src/Chapter3/PaymentResult.java

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+package Chapter3;
+
+import java.util.Scanner;
+
+public class PaymentResult {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        System.out.println("请输入支付金额:");
+        double paymentAmount = scanner.nextDouble();
+        System.out.println("\n支付成功");
+        System.out.println("京东商城");
+        System.out.printf("%.1f元\n", paymentAmount);
+        System.out.println("优惠金额\t\t10.00元");
+        System.out.println("支付方式\t\t工商银行储蓄卡(5009)");
+        System.out.println("交易时间\t\t2018-11-27 00:34:02");
+        System.out.println("订单编号\t\t893412929");
+
+        scanner.close();
+    }
+
+}