To make it easier to enter names into your code, NetBeans provides a feature known as a. error checking b. syntax coloring c. warning icons d. auto-completion

auto-completion

Explanation:

Auto-completion is a feature of  NetBeans Java Editor that assist in the quick completion and generation of code. This is generally useful when you are trying to fill a missing code, or when you are trying to generate a block of codes when they are needed. The auto-complete feature help people in predicting what they actually want.