Java isn't the backbone of the Web it once was, but some people still need it. Without it, certain websites, online games and even useful programs like LibreOffice won't run.
Unfortunately, hackers have picked apart Java for its security flaws. After every security update, even more flaws are discovered.
The most recent version of Java, however, has increased security controls that will help you use it more safely. Find out how to use them in this helpful tip. That way, you can have all the fun, useful programs that use Java with less danger.
Note that during installation Java will ask you to install the Ask toolbar and change your browser's search engine to Ask. If you do not want this (trust me, you don't need it), be sure to uncheck this option.