The IDE has a dynamic code completion feature for the Java editor that enables you to type a few characters and then display a list of possible classes, methods, variables, and so on that can be used to automatically complete the expression. Similarly, in the HTML editor you can type a few characters and then display a list of possible HTML tags, attributes, and attribute values that can be used to automatically complete the HTML tag.
Follow these links for information about code completion:
Completing a Java Expression
Completing an HTML Tag
Updating the Parser Database
Setting the Completion Box Delay
Disabling Automatic Code Completion