What is polymorphism

What is the purpose of the runtime class

What is dynamic binding (late binding)?

What type of parameter passing does java support?

Do multiple inheritance in java?

Can we declare a static variable inside a method?

What are the differences between JIT and Hotspot?

What is inheritance?

Who is the great Oldman of India? 

\(Sinx+cosx= sin^2x+cos^2x\)

Find the value of X. 

n is positive integer，f（x）is continues in R，when x →∞，f（x）=x^（2n）+o（x^（2n）），prove that f（x）has the minimun value