[trivial] replacing all calls to Class.newInstance() with Class.getConstructor().newInstance to avoid warnings which are default in many JDK11+ environments, and it shouldn’t change anything (we handle the change from sneaky throwing to InvocationTargetException appropriately).

src/core/lombok/core/AgentLauncher.java

@@ -22,6 +22,7 @@
 package lombok.core;
 
 import java.lang.instrument.Instrumentation;
+import java.lang.reflect.InvocationTargetException;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
@@ -35,9 +36,10 @@ public class AgentLauncher {
 		for (AgentInfo info : AGENTS) {
 			try {
 				Class<?> agentClass = Class.forName(info.className());
-				AgentLaunchable agent = (AgentLaunchable) agentClass.newInstance();
+				AgentLaunchable agent = (AgentLaunchable) agentClass.getConstructor().newInstance();
 				agent.runAgent(agentArgs, instrumentation, injected, launchingContext);
 			} catch (Throwable t) {
+				if (t instanceof InvocationTargetException) t = t.getCause();
 				info.problem(t, instrumentation);
 			}
 		}

src/core/lombok/core/AnnotationProcessor.java

@@ -112,7 +112,7 @@ public class AnnotationProcessor extends AbstractProcessor {
 			
 			try {
 				ClassLoader classLoader = findAndPatchClassLoader(javacProcEnv);
-				processor = (Processor) Class.forName("lombok.javac.apt.LombokProcessor", false, classLoader).newInstance();
+				processor = (Processor) Class.forName("lombok.javac.apt.LombokProcessor", false, classLoader).getConstructor().newInstance();
 			} catch (Exception e) {
 				delayedWarnings.add("You found a bug in lombok; lombok.javac.apt.LombokProcessor is not available. Lombok will not run during this compilation: " + trace(e));
 				return false;

src/delombok/lombok/delombok/ant/DelombokTask.java

@@ -188,7 +188,7 @@ class Tasks {
 			Location loc = getLocation();
 			
 			try {
-				Object instance = shadowLoadClass("lombok.delombok.ant.DelombokTaskImpl").newInstance();
+				Object instance = shadowLoadClass("lombok.delombok.ant.DelombokTaskImpl").getConstructor().newInstance();
 				for (Field selfField : getClass().getDeclaredFields()) {
 					if (selfField.isSynthetic() || Modifier.isStatic(selfField.getModifiers())) continue;
 					Field otherField = instance.getClass().getDeclaredField(selfField.getName());
@@ -208,7 +208,7 @@ class Tasks {
 				Method m = instance.getClass().getMethod("execute", Location.class);
 				m.invoke(instance, loc);
 			} catch (Exception e) {
-				Throwable t = (e instanceof InvocationTargetException) ? ((InvocationTargetException) e).getCause() : e;
+				Throwable t = (e instanceof InvocationTargetException) ? e.getCause() : e;
 				if (t instanceof Error) throw (Error) t;
 				if (t instanceof RuntimeException) throw (RuntimeException) t;
 				throw new RuntimeException(t);

src/utils/lombok/core/SpiLoadUtil.java

@@ -26,6 +26,7 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.lang.annotation.Annotation;
+import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
 import java.net.URL;
@@ -108,10 +109,13 @@ public class SpiLoadUtil {
 					
 					@Override public C next() {
 						try {
-							return target.cast(Class.forName(names.next(), true, fLoader).newInstance());
+							return target.cast(Class.forName(names.next(), true, fLoader).getConstructor().newInstance());
 						} catch (Exception e) {
-							if (e instanceof RuntimeException) throw (RuntimeException)e;
-							throw new RuntimeException(e);
+							Throwable t = e;
+							if (t instanceof InvocationTargetException) t = t.getCause();
+							if (t instanceof RuntimeException) throw (RuntimeException) t;
+							if (t instanceof Error) throw (Error) t;
+							throw new RuntimeException(t);
 						}
 					}
 					

src/utils/lombok/javac/Javac.java

@@ -409,10 +409,14 @@ public class Javac {
 		} else {
 			try {
 				if (CTC_VOID.equals(tag)) {
-					return (Type) JC_VOID_TYPE.newInstance();
+					return (Type) JC_VOID_TYPE.getConstructor().newInstance();
 				} else {
-					return (Type) JC_NO_TYPE.newInstance();
+					return (Type) JC_NO_TYPE.getConstructor().newInstance();
 				}
+			} catch (InvocationTargetException e) {
+				throw sneakyThrow(e.getCause());
+			} catch (NoSuchMethodException e) {
+				throw sneakyThrow(e);
 			} catch (IllegalAccessException e) {
 				throw sneakyThrow(e);
 			} catch (InstantiationException e) {