java

Author: Estom

.vscode/settings.json

@@ -198,4 +198,5 @@
         "Java源代码/Lesson06"
     ],
     "java.configuration.updateBuildConfiguration": "disabled",
+    "java.compile.nullAnalysis.mode": "automatic",
 }

Java基础教程/JVM原理/01 Java编译原理.md renamed to Java/JVM原理/01 Java编译原理.md

@@ -1,28 +1,28 @@
-package cn.aofeng.demo.eventdriver_improve;
-/**
- * 事件
- * 
- * @author aofeng <[email protected]>
- */
-public class Event {
-
-    // 事件附带的数据
-    private Object data;
-    
-    // 事件类型
-    private String eventType;
-    
-    public Event(String eventType, Object obj){
-        this.eventType = eventType;
-        this.data = obj;
-    }
-
-    public Object getData() {
-        return this.data;
-    }
-    
-    public String getEventType() {
-        return this.eventType;
-    }
-
+package cn.aofeng.demo.eventdriver_improve;
+/**
+ * 事件
+ * 
+ * @author aofeng <[email protected]>
+ */
+public class Event {
+
+    // 事件附带的数据
+    private Object data;
+    
+    // 事件类型
+    private String eventType;
+    
+    public Event(String eventType, Object obj){
+        this.eventType = eventType;
+        this.data = obj;
+    }
+
+    public Object getData() {
+        return this.data;
+    }
+    
+    public String getEventType() {
+        return this.eventType;
+    }
+
 }

Java基础教程/JVM原理/02 Java类加载机制.md renamed to Java/JVM原理/02 Java类加载机制.md

@@ -1,16 +1,16 @@
-package cn.aofeng.demo.eventdriver_improve;
-/**
- * 事件监听器(监听一个或多个事件并进行具体的处理)
- * 
- * @author aofeng <[email protected]>
- */
-public interface EventListener {
-
-	/**
-	 * 处理事件
-	 * 
-	 * @param event    事件
-	 */
-	public void execute(Event event);
-
+package cn.aofeng.demo.eventdriver_improve;
+/**
+ * 事件监听器(监听一个或多个事件并进行具体的处理)
+ * 
+ * @author aofeng <[email protected]>
+ */
+public interface EventListener {
+
+	/**
+	 * 处理事件
+	 * 
+	 * @param event    事件
+	 */
+	public void execute(Event event);
+
 }

Java基础教程/JVM原理/03 Java垃圾回收机制.md renamed to Java/JVM原理/03 Java垃圾回收机制.md

@@ -1,64 +1,64 @@
-package cn.aofeng.demo.eventdriver_improve;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-/**
- * 事件管理器。负责
- * 
- * @author aofeng <[email protected]>
- */
-public class EventManagement {
-
-    private Map<String, List<EventListener>> map = new HashMap<String, List<EventListener>>();
-    
-	public EventManagement(){
-
-	}
-
-	/**
-	 * 向指定事件添加一个监听器
-	 * 
-	 * @param eventType 事件类型
-	 * @param listener 事件监听器
-	 * @return 添加成功返回true；添加失败返回false
-	 */
-	public boolean addListener(String eventType, EventListener listener){
-	    List<EventListener> listeners = map.get(eventType);
-	    if (null == listeners) {
-	        listeners = new ArrayList<EventListener>();
-        }
-	    boolean result = listeners.add(listener);
-	    map.put(eventType, listeners);
-	    
-		return result;
-	}
-
-	/**
-	 * 移除事件的某一个监听器
-	 * 
-	 * @param eventType 事件类型
-     * @param listener 事件监听器
-     * @return 移除成功返回true；移除失败返回false
-	 */
-	public boolean removeListener(String eventType, EventListener listener){
-	    List<EventListener> listeners = map.get(eventType);
-        if (null != listeners) {
-            return listeners.remove(listener);
-        }
-        
-		return false;
-	}
-
-	/**
-	 * 获取指定事件的监听器
-	 * 
-	 * @param eventType 事件类型
-	 * @return 如果指定的事件没有监听器返回null；否则返回监听器列表
-	 */
-	public List<EventListener> getEventListeners(String eventType) {
-	    return map.get(eventType);
-	}
-
+package cn.aofeng.demo.eventdriver_improve;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 事件管理器。负责
+ * 
+ * @author aofeng <[email protected]>
+ */
+public class EventManagement {
+
+    private Map<String, List<EventListener>> map = new HashMap<String, List<EventListener>>();
+    
+	public EventManagement(){
+
+	}
+
+	/**
+	 * 向指定事件添加一个监听器
+	 * 
+	 * @param eventType 事件类型
+	 * @param listener 事件监听器
+	 * @return 添加成功返回true；添加失败返回false
+	 */
+	public boolean addListener(String eventType, EventListener listener){
+	    List<EventListener> listeners = map.get(eventType);
+	    if (null == listeners) {
+	        listeners = new ArrayList<EventListener>();
+        }
+	    boolean result = listeners.add(listener);
+	    map.put(eventType, listeners);
+	    
+		return result;
+	}
+
+	/**
+	 * 移除事件的某一个监听器
+	 * 
+	 * @param eventType 事件类型
+     * @param listener 事件监听器
+     * @return 移除成功返回true；移除失败返回false
+	 */
+	public boolean removeListener(String eventType, EventListener listener){
+	    List<EventListener> listeners = map.get(eventType);
+        if (null != listeners) {
+            return listeners.remove(listener);
+        }
+        
+		return false;
+	}
+
+	/**
+	 * 获取指定事件的监听器
+	 * 
+	 * @param eventType 事件类型
+	 * @return 如果指定的事件没有监听器返回null；否则返回监听器列表
+	 */
+	public List<EventListener> getEventListeners(String eventType) {
+	    return map.get(eventType);
+	}
+
 }

Java基础教程/JVM原理/Java 虚拟机.md renamed to Java/JVM原理/Java 虚拟机.md

@@ -1,38 +1,38 @@
-package cn.aofeng.demo.eventdriver_improve;
-import java.util.List;
-
-/**
- * 事件源(事件发送者)
- * 
- * @author aofeng <[email protected]>
- */
-public class EventSource {
-
-    // 事件管理器
-    private EventManagement eventManagement;;
-    
-	public EventSource(EventManagement eventManagement){
-	    this.eventManagement = eventManagement;
-	}
-
-	/**
-     * 派发事件
-     * 
-     * @param data 事件
-     */
-    public void fire(Event event) {
-        if (null == event) {
-            return;
-        }
-        
-        List<EventListener> listeners = eventManagement.getEventListeners(event.getEventType());
-        if (null == listeners) {
-            return;
-        }
-        
-        for (EventListener listener : listeners) {
-            listener.execute(event);
-        }
-    }
-
+package cn.aofeng.demo.eventdriver_improve;
+import java.util.List;
+
+/**
+ * 事件源(事件发送者)
+ * 
+ * @author aofeng <[email protected]>
+ */
+public class EventSource {
+
+    // 事件管理器
+    private EventManagement eventManagement;;
+    
+	public EventSource(EventManagement eventManagement){
+	    this.eventManagement = eventManagement;
+	}
+
+	/**
+     * 派发事件
+     * 
+     * @param data 事件
+     */
+    public void fire(Event event) {
+        if (null == event) {
+            return;
+        }
+        
+        List<EventListener> listeners = eventManagement.getEventListeners(event.getEventType());
+        if (null == listeners) {
+            return;
+        }
+        
+        for (EventListener listener : listeners) {
+            listener.execute(event);
+        }
+    }
+
 }

Java基础教程/JVM原理/image/2022-12-19-17-08-55.png renamed to Java/JVM原理/image/2022-12-19-17-08-55.png

@@ -1,17 +1,17 @@
-package cn.aofeng.demo.eventdriver_normal;
-/**
- * 事件
- * @author aofeng <[email protected]>
- */
-public class Event {
-
-    private Object data;
-    
-	public Event(Object obj){
-	    this.data = obj;
-	}
-
-	public Object getData() {
-	    return data;
-	}
+package cn.aofeng.demo.eventdriver_normal;
+/**
+ * 事件
+ * @author aofeng <[email protected]>
+ */
+public class Event {
+
+    private Object data;
+    
+	public Event(Object obj){
+	    this.data = obj;
+	}
+
+	public Object getData() {
+	    return data;
+	}
 }

Java基础教程/JVM原理/image/2022-12-19-17-19-40.png renamed to Java/JVM原理/image/2022-12-19-17-19-40.png

@@ -1,16 +1,16 @@
-package cn.aofeng.demo.eventdriver_normal;
-/**
- * 事件监听器(监听一个或多个事件并进行具体的处理)
- * 
- * @author aofeng <[email protected]>
- */
-public interface EventListener {
-
-    /**
-     * 处理事件
-     * 
-     * @param event 事件
-     */
-    public void execute(Event event);
-
+package cn.aofeng.demo.eventdriver_normal;
+/**
+ * 事件监听器(监听一个或多个事件并进行具体的处理)
+ * 
+ * @author aofeng <[email protected]>
+ */
+public interface EventListener {
+
+    /**
+     * 处理事件
+     * 
+     * @param event 事件
+     */
+    public void execute(Event event);
+
 }