Setting Eclipse launcher icon in ubuntu

Installed Eclipse ubuntu, but when you launch it, a grey icon appears in the launcher. How?

First, find the eclipse icon by going to where you installed eclipse, e.g.
/home/user/eclipse

then typing the command to find the icon:

find . -name eclipse*.png

For me, the result is

./configuration/org.eclipse.osgi/688/0/.cp/eclipse32.png

Next, open
/home/user/.local/share/application/eclipse.desktop

then change the line starting with Icon= to

Icon=/home/user/eclipse/configuration/org.eclipse.osgi/688/0/.cp/eclipse32.png