A.Input: Echo:

B.Input: Helloworld Echo: Helloworld

C.Input:
Then block until any input comes from System.in.

D.Input:
Echo: Helloworld

E.A NullPointerException is thrown at run time.

A.s.replace(s.indexOf("A"), s.indexOf("C"), "Q");

B.s.replace(s.indexOf("B"), s.indexOf("B"), "Q");

C.s.replace(s.indexOf("B"), s.indexOf("C"), "Q");

D.s.replace(s.indexOf("A"), s.indexOf("B"), "Q");

A.I am an array

B.The compilation fails due to an error in line 1.

C.I am an object

D.I am an object array

A.f2.foo(li) prints Hello world!

B.b1.foo(li) prints Bonjour le monde!

C.f1.foo(li) prints Bonjour le monde!

D.b1.foo(li) prints Hola Mundo!

E.f1.foo(li) prints Hello world!

F.f2.foo(li) prints Bonjour le monde!

G.f1.foo(li) prints Hola Mundo!

H.b1.foo(li) prints Hello world!

I.f2.foo(li) prints Hola Mundo!

A.The compilation fails.

B.1.99,2.99,0

C.1.99,2.99,0.0

D.1.99,2.99