list排序的问题
1.需求，找出list对象中某个属性最大的
2.我的实现
private Double getMaxUpperrangeLimit() { ParametersPoolInterface parameterPool = RequestContext.getPool(); ListSensorParameter listSensorLp = (ListSensorParameter)parameterPool.getParameter(ParameterNames.LIST_SENSOR_LP); List<Sensor> sensorLpList = listSensorLp.getSensorList(); if (sensorLpList == null || sensorLpList.size() < 1) { return null; } Double max = sensorLpList.get(0).getUpperrangeLimit(); for (int i = 1; i < sensorLpList.size(); i++ ) { Double tmp = sensorLpList.get(i).getUpperrangeLimit(); if (tmp > max) { max = tmp; } } return max; }