Optimize code

Author: steverao

instrumentation/apache-elasticjob-3.0/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/apacheelasticjob/v3_0/EmbedZookeeperServer.java

@@ -17,18 +17,18 @@ public static void start(int port) {
     try {
       testingServer =
           new TestingServer(
-              port, new File(String.format("target/test_zk_data/%s/", System.nanoTime())));
-    } catch (Exception ex) {
-      throw new RuntimeException("Failed to start embedded ZooKeeper server", ex);
+              port, new File(String.format("build/test_zk_data/%s/", System.nanoTime())));
+    } catch (Exception e) {
+      throw new RuntimeException("Failed to start embedded ZooKeeper server", e);
     }
   }
 
   public static void stop() {
     if (testingServer != null) {
       try {
         testingServer.close();
-      } catch (IOException ex) {
-        throw new RuntimeException("Failed to stop embedded ZooKeeper server", ex);
+      } catch (IOException e) {
+        throw new RuntimeException("Failed to stop embedded ZooKeeper server", e);
       }
     }
   }

instrumentation/apache-elasticjob-3.0/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/apacheelasticjob/v3_0/TestDataflowJob.java

@@ -5,7 +5,8 @@
 
 package io.opentelemetry.javaagent.instrumentation.apacheelasticjob.v3_0;
 
-import java.util.Arrays;
+import static java.util.Arrays.asList;
+
 import java.util.List;
 import org.apache.shardingsphere.elasticjob.api.ShardingContext;
 import org.apache.shardingsphere.elasticjob.dataflow.job.DataflowJob;
@@ -17,11 +18,11 @@ public List<String> fetchData(ShardingContext context) {
     // Simulate fetching data based on sharding item
     switch (context.getShardingItem()) {
       case 0:
-        return Arrays.asList("data-0-1", "data-0-2");
+        return asList("data-0-1", "data-0-2");
       case 1:
-        return Arrays.asList("data-1-1", "data-1-2");
+        return asList("data-1-1", "data-1-2");
       default:
-        return Arrays.asList("data-default");
+        return asList("data-default");
     }
   }
 

instrumentation/apache-elasticjob-3.0/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/apacheelasticjob/v3_0/TestFailedJob.java

@@ -12,7 +12,6 @@ public class TestFailedJob implements SimpleJob {
 
   @Override
   public void execute(ShardingContext context) {
-    // Simulate a failed job by throwing an exception
     throw new RuntimeException("Simulated job failure for testing");
   }
 }

instrumentation/apache-elasticjob-3.0/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/apacheelasticjob/v3_0/TestSimpleJob.java

@@ -12,7 +12,6 @@ public class TestSimpleJob implements SimpleJob {
 
   @Override
   public void execute(ShardingContext context) {
-    // Simulate some work
     try {
       Thread.sleep(100);
     } catch (InterruptedException e) {