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Can I find out the return value before returning while debugging in Intellij?

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So, if you've just taken a step in live debugging (F10 or F11), you can use the Step Backward button to quickly navigate to the previous step. This will automatically put Visual Studio in Historical debugging mode, at the line of code you've stepped back to.

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Smart step intoFrom the main menu, select Run | Debugging Actions | Smart Step Into or press Shift+F7 . Click the method. You can also select it using the arrow keys or tabs and press Enter / F7 .

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You can click on the Run icon in the gutter area and select the Debug option. You can invoke context actions on the class or main method by using Alt+Enter and choose the Debug action. You can also start it from the Run menu, or by pressing Shift F9.


On IntelliJ IDEA 2016.3: it's hidden inside the cog button of the debug panel. Ensure Show Method Return Values is checked.

IntelliJ IDEA 2016.3 "Show Method Return Values"

Use the debugger to break somewhere inside the function whose return value you'd like to see.

step into function

Step out of the function (or step over until you escape):

step out

Observe that the return value appears in your variables:

observe the return value


There is Watch method return values button available in the debugger panel.

Watch method return values: Click this button to watch return values of the last executed method.

watch method return values

IDEA 12 configuration:

IDEA 12


There seems to be a couple ways you can do this. The first one involves setting up the breakpoint on the method signature, in your case you would setup a breakpoint on Object method(){ . This will allow you to watch for the entrance and exit of the method. I believe you have to use this in conjunction with "Watch method return values" like stated above, but I haven't been able to completely test this as it takes too long to compute. Beware, this does dramatically decrease the performance of the debugger and it will take longer to debug.

Also you can do the following manually.

  1. Setup the breakpoint on the return line.
  2. When the return line is hit, click on the return line, specifically put the cursor on the operation that you want to see, then go to Run->Evaluate Expression (or Alt-F8) and it should run the expression at that point and return what it's returning.

Note: If you create a breakpoint, there are a lot of things you can tell IDEA to do with them, such as if you break on a breakpoint, you can tell them to perform an expression and log it. You can look around with what you can do if you right-click on a breakpoint and click properties.

UPDATE: Try this in conjunction with the first way of doing it. Don't use "Watch method return values" as it seems to slow down or freeze up the debugging session. Instead do the following

  1. Right-click on the return expression you want to see and click "Add to Watches"
  2. Next add a method breakpoint like stated above.
  3. Debug your program and your method will break on the method signature.
  4. Hit the F9 key for continue and it should break again AFTER the return expression has been computed and your return expression should be in the watch column.

Remember that method breakpoints are slower so it might take more time, a tricky way to improve this if you are noticing too much of a performance hit is by just setting the return statement breakpoint (without having a method breakpoint) and then adding the method breakpoint AFTER the return statement breakpoint hits and then continuing.

Hope this helps,


This was asked a while ago, but I use a different method when I want to handle this situation.

When debugging, you can mark the expression (in your case, the expression right after the "return") and hit CTRL + ALT + F8 (Quick Evaluate Expression). IntelliJ will pop up a little window showing you the value that will be returned.