diff --git a/src/main/java/net/lamgc/cgj/bot/BotAdminCommandProcess.java b/src/main/java/net/lamgc/cgj/bot/BotAdminCommandProcess.java
index 25f3357..a06d208 100644
--- a/src/main/java/net/lamgc/cgj/bot/BotAdminCommandProcess.java
+++ b/src/main/java/net/lamgc/cgj/bot/BotAdminCommandProcess.java
@@ -21,7 +21,7 @@ import java.util.*;
 
 public class BotAdminCommandProcess {
 
-    private final static Logger log = LoggerFactory.getLogger(BotAdminCommandProcess.class.getName());
+    private final static Logger log = LoggerFactory.getLogger(BotAdminCommandProcess.class);
 
     private final static File pushListFile = new File(BotGlobal.getGlobal().getDataStoreDir(), "pushList.json");
 
diff --git a/src/main/java/net/lamgc/cgj/bot/RandomIntervalSendTimer.java b/src/main/java/net/lamgc/cgj/bot/RandomIntervalSendTimer.java
index 8f1fcd7..fafd01d 100644
--- a/src/main/java/net/lamgc/cgj/bot/RandomIntervalSendTimer.java
+++ b/src/main/java/net/lamgc/cgj/bot/RandomIntervalSendTimer.java
@@ -14,7 +14,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
 public class RandomIntervalSendTimer extends TimerTask {
 
     private final static Timer timer = new Timer("Thread-RIST", true);
-    private final static Logger log = LoggerFactory.getLogger(RandomIntervalSendTimer.class.getName());
+    private final static Logger log = LoggerFactory.getLogger(RandomIntervalSendTimer.class);
     private final static Map<Long, RandomIntervalSendTimer> timerMap = new HashMap<>();
 
     private final long timerId;
@@ -22,7 +22,7 @@ public class RandomIntervalSendTimer extends TimerTask {
     private final AutoSender sender;
     private final long time;
     private final int floatTime;
-    private AtomicBoolean loop = new AtomicBoolean();
+    private final AtomicBoolean loop = new AtomicBoolean();
     private final AtomicBoolean start = new AtomicBoolean();
     private final String hashId = Integer.toHexString(this.hashCode());
 
diff --git a/src/main/java/net/lamgc/cgj/bot/SettingProperties.java b/src/main/java/net/lamgc/cgj/bot/SettingProperties.java
index 59e2319..1520959 100644
--- a/src/main/java/net/lamgc/cgj/bot/SettingProperties.java
+++ b/src/main/java/net/lamgc/cgj/bot/SettingProperties.java
@@ -11,7 +11,7 @@ import java.util.*;
 
 public final class SettingProperties {
 
-    private final static Logger log = LoggerFactory.getLogger(SettingProperties.class.getName());
+    private final static Logger log = LoggerFactory.getLogger(SettingProperties.class);
 
     private final static File globalPropFile = new File(getPropertiesDir(), "global.properties");
     private final static Properties globalProp = new Properties();
diff --git a/src/main/java/net/lamgc/cgj/bot/cache/ImageCacheStore.java b/src/main/java/net/lamgc/cgj/bot/cache/ImageCacheStore.java
index 2d696a3..e3363c2 100644
--- a/src/main/java/net/lamgc/cgj/bot/cache/ImageCacheStore.java
+++ b/src/main/java/net/lamgc/cgj/bot/cache/ImageCacheStore.java
@@ -17,7 +17,7 @@ import java.util.concurrent.locks.ReentrantLock;
 
 public final class ImageCacheStore {
 
-    private final static Logger log = LoggerFactory.getLogger(ImageCacheStore.class.getName());
+    private final static Logger log = LoggerFactory.getLogger(ImageCacheStore.class);
 
     private final static Map<ImageCacheObject, Task> cacheMap = new Hashtable<>();
 
diff --git a/src/main/java/net/lamgc/cgj/bot/event/BotEventHandler.java b/src/main/java/net/lamgc/cgj/bot/event/BotEventHandler.java
index 1ecaab2..c1ffbf5 100644
--- a/src/main/java/net/lamgc/cgj/bot/event/BotEventHandler.java
+++ b/src/main/java/net/lamgc/cgj/bot/event/BotEventHandler.java
@@ -38,7 +38,7 @@ public class BotEventHandler implements EventHandler {
     private final ArgumentsRunner processRunner;
     private final ArgumentsRunner adminRunner;
 
-    private final static Logger log = LoggerFactory.getLogger(BotEventHandler.class.getName());
+    private final static Logger log = LoggerFactory.getLogger(BotEventHandler.class);
 
     private final static Map<Long, AtomicBoolean> muteStateMap = new Hashtable<>();
 
diff --git a/src/main/java/net/lamgc/cgj/bot/framework/coolq/CQPluginMain.java b/src/main/java/net/lamgc/cgj/bot/framework/coolq/CQPluginMain.java
index d334a4a..2073387 100644
--- a/src/main/java/net/lamgc/cgj/bot/framework/coolq/CQPluginMain.java
+++ b/src/main/java/net/lamgc/cgj/bot/framework/coolq/CQPluginMain.java
@@ -20,7 +20,7 @@ public class CQPluginMain extends CQPlugin implements EventHandler {
         // TODO(LamGC, 2020.04.21): SpringCQ无法适配MessageSenderBuilder
         // MessageSenderBuilder.setCurrentMessageSenderFactory(new SpringCQMessageSenderFactory());
         ApplicationBoot.initialBot();
-        LoggerFactory.getLogger(CQPluginMain.class.getName())
+        LoggerFactory.getLogger(CQPluginMain.class)
                 .info("BotEventHandler.COMMAND_PREFIX = {}", BotEventHandler.COMMAND_PREFIX);
     }
 
diff --git a/src/main/java/net/lamgc/cgj/bot/framework/mirai/MiraiMain.java b/src/main/java/net/lamgc/cgj/bot/framework/mirai/MiraiMain.java
index b7a55f2..f673533 100644
--- a/src/main/java/net/lamgc/cgj/bot/framework/mirai/MiraiMain.java
+++ b/src/main/java/net/lamgc/cgj/bot/framework/mirai/MiraiMain.java
@@ -22,7 +22,7 @@ import java.util.Properties;
 
 public class MiraiMain implements Closeable {
 
-    private final Logger log = LoggerFactory.getLogger(MiraiMain.class.getName());
+    private final Logger log = LoggerFactory.getLogger(MiraiMain.class);
 
     private Bot bot;
 
diff --git a/src/main/java/net/lamgc/cgj/bot/framework/mirai/message/MiraiMessageSender.java b/src/main/java/net/lamgc/cgj/bot/framework/mirai/message/MiraiMessageSender.java
index 33f7d3c..46a5273 100644
--- a/src/main/java/net/lamgc/cgj/bot/framework/mirai/message/MiraiMessageSender.java
+++ b/src/main/java/net/lamgc/cgj/bot/framework/mirai/message/MiraiMessageSender.java
@@ -26,7 +26,7 @@ public class MiraiMessageSender implements MessageSender {
 
     private final Contact member;
     private final MessageSource source;
-    private final static Logger log = LoggerFactory.getLogger(MiraiMessageSender.class.getName());
+    private final static Logger log = LoggerFactory.getLogger(MiraiMessageSender.class);
     private final static CacheStore<String> imageIdCache = new HotDataCacheStore<>(
             new StringRedisCacheStore(BotGlobal.getGlobal().getRedisServer(), "mirai.imageId"),
             new LocalHashCacheStore<>(),
diff --git a/src/main/java/net/lamgc/cgj/pixiv/PixivDownload.java b/src/main/java/net/lamgc/cgj/pixiv/PixivDownload.java
index 8846d5a..c9b6626 100644
--- a/src/main/java/net/lamgc/cgj/pixiv/PixivDownload.java
+++ b/src/main/java/net/lamgc/cgj/pixiv/PixivDownload.java
@@ -33,7 +33,7 @@ import java.util.function.BiConsumer;
 
 public class PixivDownload {
 
-    private final static Logger log = LoggerFactory.getLogger(PixivDownload.class.getName());
+    private final static Logger log = LoggerFactory.getLogger(PixivDownload.class);
 
     private final HttpClient httpClient;
 
diff --git a/src/main/java/net/lamgc/cgj/proxy/PixivAccessProxyServer.java b/src/main/java/net/lamgc/cgj/proxy/PixivAccessProxyServer.java
index 535e640..2e9d533 100644
--- a/src/main/java/net/lamgc/cgj/proxy/PixivAccessProxyServer.java
+++ b/src/main/java/net/lamgc/cgj/proxy/PixivAccessProxyServer.java
@@ -27,7 +27,7 @@ import java.util.List;
  */
 public class PixivAccessProxyServer {
 
-    private final Logger log = LoggerFactory.getLogger(PixivAccessProxyServer.class.getName());
+    private final Logger log = LoggerFactory.getLogger(PixivAccessProxyServer.class);
 
     private final HttpProxyServer proxyServer;
 
diff --git a/src/test/java/net/lamgc/cgj/pixiv/PixivDownloadTest.java b/src/test/java/net/lamgc/cgj/pixiv/PixivDownloadTest.java
index 8842474..eb37785 100644
--- a/src/test/java/net/lamgc/cgj/pixiv/PixivDownloadTest.java
+++ b/src/test/java/net/lamgc/cgj/pixiv/PixivDownloadTest.java
@@ -31,9 +31,9 @@ public class PixivDownloadTest {
 
     private static CookieStore cookieStore;
 
-    private final static Logger log = LoggerFactory.getLogger(PixivDownloadTest.class.getName());
+    private final static Logger log = LoggerFactory.getLogger(PixivDownloadTest.class);
 
-    private static HttpHost proxy = new HttpHost("127.0.0.1", 1001);
+    private static final HttpHost proxy = new HttpHost("127.0.0.1", 1001);
     
     @BeforeClass
     public static void before() throws IOException, ClassNotFoundException {