Merge pull request #39107 from

* pr/39107:
  Polish 'Remove unreachable throw code'
  Remove unreachable throw code

Closes gh-39107

Author: philwebb

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/SpringApplication.java

@@ -95,7 +95,6 @@
 import org.springframework.util.ClassUtils;
 import org.springframework.util.CollectionUtils;
 import org.springframework.util.ObjectUtils;
-import org.springframework.util.ReflectionUtils;
 import org.springframework.util.StringUtils;
 import org.springframework.util.function.ThrowingConsumer;
 import org.springframework.util.function.ThrowingSupplier;
@@ -172,6 +171,7 @@
  * @author Ethan Rubinson
  * @author Chris Bono
  * @author Tadaya Tsuyukubo
+ * @author Lasse Wulff
  * @since 1.0.0
  * @see #run(Class, String[])
  * @see #run(Class[], String[])
@@ -331,11 +331,7 @@ public ConfigurableApplicationContext run(String... args) {
 			callRunners(context, applicationArguments);
 		}
 		catch (Throwable ex) {
-			if (ex instanceof AbandonedRunException) {
-				throw ex;
-			}
-			handleRunFailure(context, ex, listeners);
-			throw new IllegalStateException(ex);
+			throw handleRunFailure(context, ex, listeners);
 		}
 		try {
 			if (context.isRunning()) {
@@ -344,11 +340,7 @@ public ConfigurableApplicationContext run(String... args) {
 			}
 		}
 		catch (Throwable ex) {
-			if (ex instanceof AbandonedRunException) {
-				throw ex;
-			}
-			handleRunFailure(context, ex, null);
-			throw new IllegalStateException(ex);
+			throw handleRunFailure(context, ex, null);
 		}
 		return context;
 	}
@@ -790,8 +782,11 @@ private <R extends Runner> void callRunner(Class<R> type, Runner runner, Throwin
 			.accept((R) runner);
 	}
 
-	private void handleRunFailure(ConfigurableApplicationContext context, Throwable exception,
+	private RuntimeException handleRunFailure(ConfigurableApplicationContext context, Throwable exception,
 			SpringApplicationRunListeners listeners) {
+		if (exception instanceof AbandonedRunException abandonedRunException) {
+			return abandonedRunException;
+		}
 		try {
 			try {
 				handleExitCode(context, exception);
@@ -810,7 +805,8 @@ private void handleRunFailure(ConfigurableApplicationContext context, Throwable
 		catch (Exception ex) {
 			logger.warn("Unable to close ApplicationContext", ex);
 		}
-		ReflectionUtils.rethrowRuntimeException(exception);
+		return (exception instanceof RuntimeException runtimeException) ? runtimeException
+				: new IllegalStateException(exception);
 	}
 
 	private Collection<SpringBootExceptionReporter> getExceptionReporters(ConfigurableApplicationContext context) {