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Own words (java) What is the purpose of extends (line 630) ? public final class Teacher extends Person - What is the difference

Own words (java)

What is the purpose of "extends" (line 630) ?

" public final class Teacher extends Person " - What is the difference between abstract and interface? - What is the use of "implements" (line 1091) ? "abstract class X implements Y {"

- What are the disadvantage of using interface ?

-What are the cons of using Override?

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