public class WeatherAggregator {
private List<WeatherSource> weatherSources;
public WeatherAggregator(List<WeatherSource> weatherSources) {
this.weatherSources = weatherSources;
}
public double getTemperature() {
return weatherSources
.stream()
.mapToDouble(WeatherSource::getTemperatureCelcius)
.average()
.getAsDouble();
}
}
我搜索了&符号在这里的含义,但找不到任何含义吗?
你能告诉我这行是怎么回事吗?
private List<WeatherSource>weatherSources;
最佳答案
它只是<
和>
的HTML源编码。下列:
List<WeatherSource>
实际上是
List<WeatherSource>
参见HTML escape characters