public RecurringCharge withAmount(Double amount) {
        setAmount(amount);
        return this;
    }
<p>
The amount of the recurring charge.
</p>

@param amount
       The amount of the recurring charge.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/RecurringCharge.java