Copy java application to C++

I have a trading software application that is built in java but it is very slow and i need it the application to be copied and remade into C++. It deals with financial markets and OCR application, where it reads data from the screen and then based on parameters set, it takes action such as mouse click etc when parameters are met. the Java application works fine overall however the whole process is slow (reading, analysis and then taking action) and i am hoping to have it remade in C++ to remove the delay in action which is causing the opportunities to be missed. So the whole design is already made and all i need is just reprogrammed in a different language