Here’s a tip sent to me by Songpol Siengvisuth:
By default JDeveloper was installed with Oracle Look and Feel and while it looks nice, a customized Look and Feel like that actually consumes more memory hence worse performance. We can switch to use a simpler Look and Feel like Windows Default by following these Steps:
- In JDeveloper, Go to Tools > Preferences
- Select “Environment” and Look for “Look and Feel” dropdown, you will find “Oracle” is selected
- Change to “Windows” and Click OK
- Restart JDeveloper to active the new Look and Feel
After the restart you will find JDeveloper look much plainer but the improved performance is noticeable.