This project provides a practical overview of numerical solutions to the wave equation of nite string using the nite di erence method. The second order central di erences for time and space is applied to a problems involving the one-dimensional wave equa- tion of nite string which lead to an explicit numerical scheme. It also allows the reader to show with the consistency, stability and convergence of explicit nite dif- ference scheme for nite string and an example with working Matlab code for the scheme is presented.