Configure eclipse to open only one class

Question

I want to make Eclipse open only one class at a time. To be more explicit, when I double click on another class, that class will open and override the first one.

Answer 1

Go to Preferences -> General -> Editors and do one of the following:

• check "Close editors automatically" and set "Number of opened editors before closing" to 1

or

• uncheck "Show multiple editor tabs"