Crowdly

NullPointerException

FileNotFoundException

RuntimeException

ClassCastException

IOException

What will be the result of the following code?

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m2 m3 m4 m1 m3

m2 m4 m1

Compile error

m1 m3 m2 m3 m4

Runtime error

m1 m2 m4

There are two classes

and

What will be the result after compiling this code?

Class Parent

Class Child

Class Parent

Class Parent

What will be the result of the following program?

We will get CustomException in run-time

We will get NumberFormatException in run-time

We will get Exception in run-time

We will get compile error

We will get NumberFormatException and CustomException in run-time

Is it possible to declare a method abstract and static

at the same time?

Yes

but not in abstract class

Yes

but only in abstract class

Yes

What are initialization blocks?

Only

static

Default

Static

and not static

Only

not static

Why is the instanceof operator needed?

Returns true if the object is an instance of a class

or its descendant

Returns true only if the object is an instance of a descendant

Returns false if the object is an instance of a class

or its descendant

Returns false only if the object is an instance of a descendant

Can a method take a different number of parameters

(arguments of variable length)?

Maybe

I do not know

Yes

Can non-static methods overload static ones?

Yes.

will just be two different methods for the program.

Static

will be available by class name

Yes.

will be the same methods for the program.

Static

will be available by class name

Yes.

We must use above that method from by class name