No. Programs should get their work done in a timely fashion, but often moderately slow is fast enough. For example, the Web browser you are using mostly does nothing as it waits for your commands. It would be only a slight improvement to make it run much faster.
You may wish to review the following. Click on a subject that interests you to go to where it was discussed.
The next chapter will discuss how the language Java fits into the concepts this chapter has discussed.