1.Write a Java application that calculates the value of PI from the infinite series :
4 - 4/3 + 4/5 - 4/7 + 4/9 - 4/11 + ...
Print a table that shows the value of PI approximated
by one term of this series, two terms,
and so on. Observe how many terms of the series
you have to use before you first get 3.14,
3.141, 3.145, and 3.14159.
2.Change the Java applet ShowData.java and its
accompanying datafile and ShowData.html to
improve its appearance
or to work with a different set of data (and file format). Here are
some ideas to improve
the appearance of the data as it is displayed:
Remove flicker by double buffering.
Make a control such as a checkbox to display a data grid.
Allow for overall labels, labeling the data units in the x and y direction,
or labeling the
values of the data points themselves.
If you have other ideas
to improve/change the appearance, perhaps to fit into an application
or a problem you have
in mind, then, yes, go ahead and try them out.