Interview Questions and Answers for 'Clover' | Search Interview Question

Interview Questions and Answers for 'Clover' - 2 question(s) found - Order By Rating

Q1. What is a Database Trigger ?

Ans. A trigger is a special kind of stored procedure that automatically gets executed upon an event in the database server.

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Q2. Why java doesn't support multiple Inheritence ?

Core Java

Ans. class A {
void test() {
System.out.println("test() method");
}
}

class B {
void test() {
System.out.println("test() method");
}
}

Suppose if Java allows multiple inheritance like this,

class C extends A, B {
}

A and B test() methods are inheriting to C class.

So which test() method C class will take? As A & B class test() methods are different , So here we would Facing Ambiguity.

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What are points to consider in terms of access modifier when we are overriding any method?

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what is covariant return type?

Are constructors inherited? Can a subclass call the parent's class constructor? When?

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Can we reduce the visibility of the inherited or overridden method ?

Does a class inherit the constructor of its super class?

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