class TestCollection {
//去重复之前集合
private static List list = Arrays.asList(
new User("张三", BigDecimal.valueOf...(35.6), 18),
new User("李四", BigDecimal.valueOf(85), 30),
new User("赵六", BigDecimal.valueOf(66.55...), 25),
new User("赵六", BigDecimal.valueOf(66.55), 25),
new User("张三", BigDecimal.valueOf(35.6),