I have a following kotlin class

class KotlinClass() {
   suspend fun executeSuspend(): ResultClass {
     .....
   }
}

I want to call this suspend function from a Java class.

public class JavaClass {
   
  public void process() {
    // .... Existing code

    ResultClass result;
    // Initialize result class by calling suspend function

    // Use the result data
    process(result)
  }
}

I know that a suspend function can be called from another suspend function or coroutine scope.
I can start a Coroutine using a runBlocking and call the execute function from there like this.

class KotlinClass() {

   fun execute(): ResultClass {
      return runBlocking {executeSuspend() }
   }

   suspend fun executeSuspend(): ResultClass {
     .....
   }
}

And I will call execute function from JavaClass.

But the problem here is that the runBlocking will block the underlying thread.

I don’t want to block any thread while calling the executeSuspend function. I want the thread to wait but in a suspended form.

My executeSuspend is not a launch and forget task. So I cannot call it from a launch. I also cannot put all the subsequent processes in the java class inside one single Coroutine scope.

Can someone please tell me how can I call the executeSuspend function and wait for the result without blocking the underlying thread.

I have tried runBlocking. It blocks the underlying thread.
I have tried CoroutineScope.async. It doesn’t block the underlying thread but it can be called from another suspend function or coroutine scope. So doesn’t fit my use case.