Java set values after if else loop in one line

user_2624866 0
Viewed 1209

How do I achieve setting the value inside if else in one line?

String amount = myJSON.optString("cValue")
double cValue = (amount != null && !amount.isEmpty()) ? Double.parseDouble(amount) : 0;
if (cValue > 0) {
    mySavings.setCouponValue(cValue);
} else {
    mySavings.setCouponValue(0.0);
}
if-statement ternary-operator conditional-operator java
5 Answers

You could simply do :

mySavings.setCouponValue((cValue > 0 ? cValue : 0.0));
user_61395270

You can code like this:

mySavings.setCouponValue((cValue > 0 ? cValue : 0.0));

Further you can use assert in your method to avoid if else.

user_108188290

You could simply use a ternary operator to set the value, without having to create a temporary variable "cValue", just for comparison

String amount = myJSON.optString("cValue")
mySavings.setCouponValue((amount != null && !amount.isEmpty()) ? Double.parseDouble(amount) : 0.0);
user_79533650

as an alternative if you're using Java 8 or above, you can do like this :

mySavings.setCouponValue(Optional.ofNullable(amount).map(cValue -> !cValue.isEmpty() ?  Double.parseDouble(cValue):0).orElse(0.0));
user_89303150

For completeness

mySavings.setCouponValue(Math.max(0.0, cValue));

Useful if you were really committed to writing terrifying "one liners". In this case by avoiding introducing the cValue variable.

Tom_Hawtin_-_tackline_47250
Related