如何检查一个接口是否扩展了 java 中的另一个接口

Question

Interface1 extends Interface2

var = Interface1 // getting name of Interface1 in var. if(Interface1 extends Interface2 ) // how can be test this condition.

Answer 1

Assuming you mean that you have .class references to the interfaces, you can use isAssignableFrom .

if (Interface2.class.isAssignableFrom(Interface1.class)) {
    // Interface1 is a subtype of Interface2
}