diff --git a/src/main/java/com/serliunx/statemanagement/exception/StateException.java b/src/main/java/com/serliunx/statemanagement/exception/StateException.java
index f5db758..c909c09 100644
--- a/src/main/java/com/serliunx/statemanagement/exception/StateException.java
+++ b/src/main/java/com/serliunx/statemanagement/exception/StateException.java
@@ -1,6 +1,8 @@
 package com.serliunx.statemanagement.exception;
 
 /**
+ * 状态机异常
+ *
  * @author <a href="mailto:serliunx@yeah.net">SerLiunx</a>
  * @version 1.0.0
  * @since 2024/12/28
diff --git a/src/main/java/com/serliunx/statemanagement/machine/StateMachineContext.java b/src/main/java/com/serliunx/statemanagement/machine/StateMachineContext.java
index 6487bd2..20bf5ea 100644
--- a/src/main/java/com/serliunx/statemanagement/machine/StateMachineContext.java
+++ b/src/main/java/com/serliunx/statemanagement/machine/StateMachineContext.java
@@ -13,6 +13,8 @@ import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.Consumer;
 
 /**
+ * 状态机上下文集合, 用于构建参数封装
+ *
  * @author <a href="mailto:serliunx@yeah.net">SerLiunx</a>
  * @version 1.0.0
  * @since 2025/2/2
diff --git a/src/main/java/com/serliunx/statemanagement/machine/handler/StateHandlerProcessParams.java b/src/main/java/com/serliunx/statemanagement/machine/handler/StateHandlerProcessParams.java
index 9f1c2bb..4f07f50 100644
--- a/src/main/java/com/serliunx/statemanagement/machine/handler/StateHandlerProcessParams.java
+++ b/src/main/java/com/serliunx/statemanagement/machine/handler/StateHandlerProcessParams.java
@@ -9,7 +9,6 @@ package com.serliunx.statemanagement.machine.handler;
  * @version 1.0.0
  * @since 2024/12/28
  */
-@SuppressWarnings("all")
 public final class StateHandlerProcessParams<S> {
 
 	/**
@@ -29,7 +28,6 @@ public final class StateHandlerProcessParams<S> {
 	 * @param from 						原状态
 	 * @param to 						目标状态
 	 * @param attach 					附加参数
-	 * @param bidirectionalStateManager 状态机内置的状态管理器
 	 */
 	public StateHandlerProcessParams(S from, S to, Object attach) {
 		this.from = from;
diff --git a/src/main/java/com/serliunx/statemanagement/machine/handler/StateHandlerRegistry.java b/src/main/java/com/serliunx/statemanagement/machine/handler/StateHandlerRegistry.java
deleted file mode 100644
index 6485f07..0000000
--- a/src/main/java/com/serliunx/statemanagement/machine/handler/StateHandlerRegistry.java
+++ /dev/null
@@ -1,10 +0,0 @@
-package com.serliunx.statemanagement.machine.handler;
-
-/**
- * @author <a href="mailto:serliunx@yeah.net">SerLiunx</a>
- * @version 1.0.0
- * @since 2024/12/28
- */
-public class StateHandlerRegistry {
-
-}
diff --git a/src/main/java/com/serliunx/statemanagement/machine/handler/StateHandlerWrapper.java b/src/main/java/com/serliunx/statemanagement/machine/handler/StateHandlerWrapper.java
index 58c26f1..c8cacc6 100644
--- a/src/main/java/com/serliunx/statemanagement/machine/handler/StateHandlerWrapper.java
+++ b/src/main/java/com/serliunx/statemanagement/machine/handler/StateHandlerWrapper.java
@@ -11,7 +11,6 @@ import java.util.concurrent.Executor;
  * @version 1.0.0
  * @since 2024/12/28
  */
-@SuppressWarnings("all")
 public final class StateHandlerWrapper<S> {
 
 	/**
diff --git a/src/main/java/com/serliunx/statemanagement/manager/StateManager.java b/src/main/java/com/serliunx/statemanagement/manager/StateManager.java
index dcada0b..bea9940 100644
--- a/src/main/java/com/serliunx/statemanagement/manager/StateManager.java
+++ b/src/main/java/com/serliunx/statemanagement/manager/StateManager.java
@@ -33,6 +33,7 @@ public interface StateManager<S> {
 
 	/**
 	 * 获取当前状态数量
+	 *
 	 * @return 数量
 	 */
 	int size();
diff --git a/src/test/java/com/serliunx/statemanagement/MachineTest.java b/src/test/java/com/serliunx/statemanagement/MachineTest.java
index 4b40116..73a58e8 100644
--- a/src/test/java/com/serliunx/statemanagement/MachineTest.java
+++ b/src/test/java/com/serliunx/statemanagement/MachineTest.java
@@ -21,8 +21,11 @@ public class MachineTest {
 	@Test
 	public void testStandardStateMachine() throws Exception {
 		StateMachine<PrinterState> stateMachine = StateMachineBuilder.from(PrinterState.values())
-				.async(true)
+				.async(false)
 				.standard()
+				.exchange(PrinterState.IDLE, PrinterState.SCANNING, h -> {
+					System.out.println("hello~");
+				})
 				.whenLeave(PrinterState.IDLE, h -> {
 					System.out.println(Thread.currentThread().getName() + ": leave IDLE");
 				})
@@ -32,28 +35,26 @@ public class MachineTest {
 				.whenEntry(PrinterState.STOPPED, h -> {
 					System.out.println(Thread.currentThread().getName() + ": entry STOPPED, from " + h.getFrom());
 				})
-				.whenHappened(PrinterEvent.TURN_ON, m -> {
-					m.switchTo(PrinterState.SCANNING);
-				})
-				.whenHappened(PrinterEvent.TURN_OFF, m -> {
-					if (m.switchTo(PrinterState.STOPPING))
-						m.switchTo(PrinterState.STOPPED);
-				})
 				.build();
 
-		stateMachine.publish(PrinterEvent.TURN_ON);
+		stateMachine.switchTo(PrinterState.SCANNING);
 	}
 
 	@Test
 	public void testConcurrentStateMachine() throws Exception {
 		ConcurrentStateMachine<PrinterState> stateMachine = StateMachineBuilder.from(PrinterState.values())
+				.async()
 				.whenEntry(PrinterState.STOPPING, h -> {
 					System.out.println(1111);
 				})
+				.whenHappened(PrinterEvent.TURN_OFF, l -> {
+					if (l.switchTo(PrinterState.STOPPING))
+						l.switchTo(PrinterState.STOPPED);
+				})
 				.concurrent()
 				.build();
 
-		System.out.println(stateMachine.compareAndSet(PrinterState.IDLE, PrinterState.STOPPING, true));
+		stateMachine.publish(PrinterEvent.TURN_OFF);
 
 		stateMachine.close();
 	}