1. @Override 에 대하여 설명하시오.
- Annotation to mention the method is overriding now.
- Compile error happens when the @Override doesnt work well. So it encourages developers build codes safer way.
2. interface 에 대하여 설명해 보시오.
- Methods in interface doesnt have implementation.
- Methods in interface should be public abstract.
- child class implements interface. So the methods in child class are able to override the same name same return type methods in interface.
3. interface 안에 올 수 있는 것은 두가지를 말해 보시오.
- public abstract methods without body
- public static final variables
4. abstract 키워드란?
- abstract methods dont have implementation(method body).
Brave but clumsy