Java Comparator和Comparable

java基础回顾：排序接口 - Comparator Comparable

需求：将Bean 按照给定的字符串顺序排序，不在这其中的字符串排序到最末尾

假定给定字符串序列为: String[] contents = {"PZ1, "PZ2", "PZ3", "OS1"}

@Data
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class TestBean implements Comparable<TestBean> {

    private String property;

    @Override
    public int compareTo(TestBean o) {
        if (this == o) {
            return 0;
        }

        if (o == null || !StringUtils.hasText(o.getProperty)) {
            return 1;
        }

        List<String> strings = Arrays.asList("OS1", "PZ3", "PZ2", "PZ1");
        String anotherProperty = o.property;
        int i = strings.indexOf(property);
        int i1 = strings.indexOf(anotherProperty);

        return i - i1;
    }

简单测试，不写测试用例了

    public static void main(String[] args) {

        TestBean testBean = new TestBean("PZ1");
        TestBean testBean1 = new TestBean("PZ2");
        TestBean testBean2 = new TestBean("PZ3");
        TestBean testBean3 = new TestBean("PZ1");
        TestBean testBean4 = new TestBean("PZ2");
        TestBean testBean5 = new TestBean("PZ2");
        TestBean testBean6 = new TestBean("OTHER");
        TestBean testBean7 = new TestBean("MNR1");
        TestBean testBean8 = new TestBean("OS1");

        List<TestBean> testBeans = Arrays.asList(testBean, testBean1, testBean2, testBean3, testBean4, testBean5, testBean6, testBean7, testBean8);

        testBeans.stream().sorted(Comparator.reverseOrder()).map(TestBean::getProperty).forEach(System.out::println);

    }
}

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