lambda之List

List<Grid.NafpGridDS>轉爲List<List>
方法一：老舊方法

		List<Grid.NafpGridDS> dsList = bean.getDSList();
		List<List<Double>> ds = new ArrayList<>();
		for(Grid.NafpGridDS d : dsList){
			List<Double> numbers = new ArrayList<>();
			ProtocolStringList protocolStringList = d.getRowList();
			for(int i=0;i<protocolStringList.size();i++){
				numbers.add(Double.parseDouble(protocolStringList.get(i)));
			}
			ds.add(numbers);
		}

方法二：

		List<Grid.NafpGridDS> dsList = bean.getDSList();
		List<List<Double>> ds = new ArrayList<>();
		dsList.stream().forEach(d -> {
			ArrayList<Double> numbers = new ArrayList<>();
			d.getRowList().stream().map(p -> numbers.add(Double.parseDouble(p))).collect(Collectors.toList());
			ds.add(numbers);
		});

方法三：

		List<Grid.NafpGridDS> dsList = bean.getDSList();
		List<List<Double>> ds = new ArrayList<>();
		dsList.stream().forEach(d -> {
			ds.add(d.getRowList().stream().map(p -> Double.parseDouble(p)).collect(Collectors.toList()));
		});

方法四：

		List<Grid.NafpGridDS> dsList = bean.getDSList();
		List<List<Double>> ds = dsList.stream().map(grid -> grid.getRowList().stream().map(Double::parseDouble).collect(Collectors.toList())).collect(Collectors.toList());
		//List<List<Double>> ds = dsList.stream().map(grid -> grid.getRowList().stream().map(p -> Double.parseDouble(p)).collect(Collectors.toList())).collect(Collectors.toList());

雙List循環查詢輸出固定對象
方法一：舊方法

		for(Grid.AvalibleResponse a : avalibleResponseList){
			List<Grid.AvalibleResponseRow> rows = a.getRowList();
			for(Grid.AvalibleResponseRow row : rows){
				String feature = row.getFeature();
				if(feature.toLowerCase().equals("d")){
					System.out.println("feature = " + feature);
					System.out.println("row.getLevelsList() = " + row.getLevelsList().stream().sorted().collect(Collectors.toList()));
					System.out.println("row.getValidtimesList() = " + row.getValidtimesList().stream().sorted(Comparator.comparing(Integer::parseInt)).collect(Collectors.toList()));
				}
			}
		}

方法二：

		List<Grid.AvalibleResponseRow> rows = avalibleResponseList.get(0).getRowList();
		Grid.AvalibleResponseRow rowOptional = rows.stream()
				.filter(row -> row.getFeature().toLowerCase().equals("d"))
				.findFirst()
				.get();
		System.out.println("feature = " + rowOptional.getFeature());
		System.out.println("Validtimes = " + rowOptional.getValidtimesList().stream().sorted(Comparator.comparing(Integer::parseInt)).collect(Collectors.toList()));
		System.out.println("LevelsList = " + rowOptional.getLevelsList().stream().sorted().collect(Collectors.toList()));

由於重複數據很多，filter過濾後，findFirst()只取第一條或者用.distinct()去重複也可以