Content Assist set up in Eclipse

# Open the Eclipse application

# Navigate to Windows > click on Preferences

# Navigate to Java and expand it

# Navigate to Editor and expand it

# Navigate to Content Assist and click on it

# Navigate to Auto Activation > Enable Auto Activation 

    Auto Activation > Auto activation triggers for Java

            Enter the following Characters :

            abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ._