Lambda filter

通过Lambda filter过滤条件, 结果为false, 不输出集合

 List<Producer> list = new ArrayList<>();
Collections.addAll(list, new Producer("01", new BigDecimal(3.13)), new Producer("02", new BigDecimal(3.14)));
list.stream().filter(producer -> {
	BigDecimal yuanPrice = new BigDecimal(200);
	BigDecimal xianPrice = new BigDecimal(100);
	// 原价、现价
	// yuanPrice > xianPrice = 1
	// yuanPrice > xianPrice = -1
	// yuanPrice = xianPrice = 0
	return yuanPrice.compareTo(xianPrice) == -1 ? false : true; //true会输出, false不会输出
}).forEach(print -> System.out.println(JSON.toJSON(print)));
/*TODO: {"name":"01","mony":3.12999999999999989341858963598497211933135986328125} {"name":"02","mony":3.140000000000000124344978758017532527446746826171875}*/

posted on 2021-08-03 17:42 (Play) 阅读(593) 评论(0) 编辑收藏举报

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	List<Producer> list = new ArrayList<>();
	Collections.addAll(list, new Producer("01", new BigDecimal(3.13)), new Producer("02", new BigDecimal(3.14)));
	list.stream().filter(producer -> {
	BigDecimal yuanPrice = new BigDecimal(200);
	BigDecimal xianPrice = new BigDecimal(100);
	// 原价、现价
	// yuanPrice > xianPrice = 1
	// yuanPrice > xianPrice = -1
	// yuanPrice = xianPrice = 0
	return yuanPrice.compareTo(xianPrice) == -1 ? false : true; //true会输出, false不会输出
	}).forEach(print -> System.out.println(JSON.toJSON(print)));
	/TODO: {"name":"01","mony":3.12999999999999989341858963598497211933135986328125} {"name":"02","mony":3.140000000000000124344978758017532527446746826171875}/