Java 11 migrate remaining q-r (#1121)

* Moves queue-load-leveling to Java 11

* Moves reactor to Java 11

* Moves reader-writer-lock to Java 11

* Moves repository to Java 11

* Moves resource-acquisition-is-initialization to Java 11

* Moves retry to Java 11

* Moves role-object to Java 11

resource-acquisition-is-initialization/src/main/java/com/iluwatar/resource/acquisition/is/initialization/App.java

@@ -54,11 +54,11 @@ public class App {
    */
   public static void main(String[] args) throws Exception {
 
-    try (SlidingDoor slidingDoor = new SlidingDoor()) {
+    try (var ignored = new SlidingDoor()) {
       LOGGER.info("Walking in.");
     }
 
-    try (TreasureChest treasureChest = new TreasureChest()) {
+    try (var ignored = new TreasureChest()) {
       LOGGER.info("Looting contents.");
     }
   }

resource-acquisition-is-initialization/src/main/java/com/iluwatar/resource/acquisition/is/initialization/SlidingDoor.java

@@ -38,7 +38,7 @@ public class SlidingDoor implements AutoCloseable {
   }
 
   @Override
-  public void close() throws Exception {
+  public void close() {
     LOGGER.info("Sliding door closes.");
   }
 }

resource-acquisition-is-initialization/src/main/java/com/iluwatar/resource/acquisition/is/initialization/TreasureChest.java

@@ -24,7 +24,6 @@
 package com.iluwatar.resource.acquisition.is.initialization;
 
 import java.io.Closeable;
-import java.io.IOException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -40,7 +39,7 @@ public class TreasureChest implements Closeable {
   }
 
   @Override
-  public void close() throws IOException {
+  public void close() {
     LOGGER.info("Treasure chest closes.");
   }
 }

resource-acquisition-is-initialization/src/test/java/com/iluwatar/resource/acquisition/is/initialization/AppTest.java

@@ -26,15 +26,12 @@ package com.iluwatar.resource.acquisition.is.initialization;
 import org.junit.jupiter.api.Test;
 
 /**
- * 
  * Application test
- *
  */
 public class AppTest {
 
   @Test
   public void test() throws Exception {
-    String[] args = {};
-    App.main(args);
+    App.main(new String[]{});
   }
 }

resource-acquisition-is-initialization/src/test/java/com/iluwatar/resource/acquisition/is/initialization/ClosableTest.java

@@ -23,19 +23,18 @@
 
 package com.iluwatar.resource.acquisition.is.initialization;
 
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
 import ch.qos.logback.classic.Logger;
 import ch.qos.logback.classic.spi.ILoggingEvent;
 import ch.qos.logback.core.AppenderBase;
 import java.util.LinkedList;
 import java.util.List;
-
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.slf4j.LoggerFactory;
 
-import static org.junit.jupiter.api.Assertions.assertTrue;
-
 /**
  * Date: 12/28/15 - 9:31 PM
  *
@@ -56,8 +55,8 @@ public class ClosableTest {
   }
 
   @Test
-  public void testOpenClose() throws Exception {
-    try (final SlidingDoor door = new SlidingDoor(); final TreasureChest chest = new TreasureChest()) {
+  public void testOpenClose() {
+    try (final var ignored = new SlidingDoor(); final var ignored1 = new TreasureChest()) {
       assertTrue(appender.logContains("Sliding door opens."));
       assertTrue(appender.logContains("Treasure chest opens."));
     }