diff --git a/java/CreateIncome.java b/java/CreateIncome.java
new file mode 100644
index 0000000000000000000000000000000000000000..2690cc73536c4b1408f1f4966b7f9c2d81d92789
--- /dev/null
+++ b/java/CreateIncome.java
@@ -0,0 +1,10 @@
+import java.math.BigDecimal;
+
+public class CreateIncome {
+    /**
+     * 返回支付金额
+     */
+    public static BigDecimal getPayFee(BigDecimal payFee) {
+        return payFee.multiply(BigDecimal.TEN);
+    }
+}