IntelliJ: find code path between two methods

Question

I have two methods in my code base. I would like to figure out, if there exists a path in which one will be called from the other. Is there some way to achieve this easily in IntelliJ without digging manually through call hierarchies?

Answer 1

The following might work for you on IntellIJ IDEA 16 and higher. It uses call hierarchies, but automates the digging;-)

• invoke Call Hierarchy Ctrl+Alt+H on method 1.
• click on the Callee Methods Hierarchy button in the tool window that appears to show all methods that are called by method 1.
• click on the Expand All button a couple of times to show called methods until the desired depth.
• Invoke Find Usages on method 2 and select the Scope Hierarchy 'Callees of 1'

Result: all calls of method 2 in method 1's call hierarchy.

Answer 2

I've done the following:

• Select method 2 and invoke call hierarchy with Ctrl+Alt+H.
• Click Expand All on the hierarchy panel
• Click inside the hierarchy panel, and start typing the name of method 1