Shortcut Keys in eclipse [we should know but do not know]

I will not talk about what we use every day. I will share with you the shortcut keys we should know, but I don't know.
1. Alt + Shift + R Rename (one of my favorite ones, especially the rename of variables and classes, which saves a lot of labor compared with manual methods)
2. Press Ctrl + Shift + X to make all the selected text in uppercase.
3. Press Ctrl + Shift + Y to change all selected texts to lowercase letters.
4. CTRL +. Locate the next problematic location
5. CTRL +, locate the last issue
6. CTRL + ALT + H if you want to know whether a class method is called by other classes, select the method name and press CTRL + ALT + H ",
Eclipse will display the methods called by this method, and ultimately generate a call relationship tree.
7. Powerful search using Ctrl + H. Cross-file query.
8. CTRL + Shift + u is a common function (only search for this file)
Select the character you want to search. Press the key combination. The following list lists all the rows with this string. You do not need to search one by one.
The color icon is displayed in the logo positioning bar on the right.
9. Automatic Layout Ctrl + Shift + F
10. Close the current editing window Ctrl + W
11. Close all editing windows Ctrl + Shift + W
12. Tab/Shift + TAB move the unit of a tab to the forward and backward of the selected area.
Hope everyone happy programming every day!