When we solve the problem caused by eclipse due to automatic completion, we import org.eclipse.jface.text as the source program into eclipse. By default, the source code may not be displayed, so the source code cannot be modified. At this time, in order to solve this problem, we need to install the platform-sdk plugin.
This plugin belongs to the type of updates, we need to know the eclipse version information, such as e4.13, at this time, we fill in http://download.eclipse.org/eclipse/updates/ in Help-> Install New Software-> Work with 4.13, as follows:
Select Eclipse Platform SDK to install. After the installation is complete, restart eclipse, we open the plugins view again, and then select the org.eclipse.jface.text jar package, and then Import As-> Source Project can see the source code.
