Java 子类 instanceof 父类

1.结论：

• 子类 instanceof 父类 == true
• 父类 instanceof 子类 == false

2.测试代码

1@Test
2    public void testInstanceof() {
3        // 子类 instanceof 父类
4        ConsultSmsPatientDataBO sub = new ConsultSmsPatientDataBO();
5        boolean one = sub instanceof ConsultSmsDataBO; // one = true
6
7
8        // 父类 instanceof 子类
9        ConsultSmsDataBO par = new ConsultSmsDataBO();
10        boolean two = par instanceof ConsultSmsPatientDataBO; // two = false
11
12    }