diff --git a/README.md b/README.md
index 521990d..7d27622 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,2 @@
-# AndroidCommonLib
+# AndroidComponentLib
 Android component library
diff --git a/app/src/main/java/co/review/androidcommonlib/designmode/abstract_and_interface/FileLogger.java b/app/src/main/java/co/review/androidcommonlib/designmode/abstract_and_interface/FileLogger.java
new file mode 100644
index 0000000..a945aa6
--- /dev/null
+++ b/app/src/main/java/co/review/androidcommonlib/designmode/abstract_and_interface/FileLogger.java
@@ -0,0 +1,35 @@
+package co.review.androidcommonlib.designmode.abstract_and_interface;
+
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.Writer;
+import java.util.logging.Level;
+
+/**
+ * 创建时间: 2020/01/16 15:33 <br>
+ * 作者: qiudengjiao <br>
+ * 描述: 抽象类的子类：输出日志到文件
+ */
+public class FileLogger extends Logger {
+
+  private Writer fileWriter;
+
+  public FileLogger(String name, boolean enabled, Level minPermittedLevel, String filepath)
+      throws IOException {
+    super(name, enabled, minPermittedLevel);
+    this.fileWriter = new FileWriter(filepath);
+  }
+
+
+  @Override
+  protected void doLog(Level level, String message) {
+    // 格式化level和message,输出到日志文件
+    try {
+      fileWriter.write("");
+    } catch (IOException e) {
+      e.printStackTrace();
+    }
+  }
+
+
+}
diff --git a/app/src/main/java/co/review/androidcommonlib/designmode/abstract_and_interface/Logger.java b/app/src/main/java/co/review/androidcommonlib/designmode/abstract_and_interface/Logger.java
new file mode 100644
index 0000000..4b22f03
--- /dev/null
+++ b/app/src/main/java/co/review/androidcommonlib/designmode/abstract_and_interface/Logger.java
@@ -0,0 +1,31 @@
+package co.review.androidcommonlib.designmode.abstract_and_interface;
+
+import java.util.logging.Level;
+
+/**
+ * 创建时间: 2020/01/16 15:07 <br>
+ * 作者: qiudengjiao <br>
+ * 描述: 抽象类练习
+ */
+public abstract class Logger {
+
+  private String name;
+  private boolean enabled;
+  private Level minPermittedLevel;
+
+  public Logger(String name, boolean enabled, Level minPermittedLevel) {
+    this.name = name;
+    this.enabled = enabled;
+    this.minPermittedLevel = minPermittedLevel;
+  }
+
+  public void log(Level level, String message) {
+    boolean loggable = enabled && (minPermittedLevel.intValue() <= level.intValue());
+    if (!loggable) return;
+    doLog(level, message);
+  }
+
+  protected abstract void doLog(Level level, String message);
+
+
+}
diff --git a/app/src/main/java/co/review/androidcommonlib/designmode/abstract_and_interface/MessageQueueClient.java b/app/src/main/java/co/review/androidcommonlib/designmode/abstract_and_interface/MessageQueueClient.java
new file mode 100644
index 0000000..8cda70d
--- /dev/null
+++ b/app/src/main/java/co/review/androidcommonlib/designmode/abstract_and_interface/MessageQueueClient.java
@@ -0,0 +1,12 @@
+package co.review.androidcommonlib.designmode.abstract_and_interface;
+
+/**
+ * 创建时间: 2020/01/16 16:48 <br>
+ * 作者: qiudengjiao <br>
+ * 描述:
+ */
+public class MessageQueueClient {
+
+  public void send(){}
+
+}
diff --git a/app/src/main/java/co/review/androidcommonlib/designmode/abstract_and_interface/MessageQueueLogger.java b/app/src/main/java/co/review/androidcommonlib/designmode/abstract_and_interface/MessageQueueLogger.java
new file mode 100644
index 0000000..8e210fe
--- /dev/null
+++ b/app/src/main/java/co/review/androidcommonlib/designmode/abstract_and_interface/MessageQueueLogger.java
@@ -0,0 +1,25 @@
+package co.review.androidcommonlib.designmode.abstract_and_interface;
+
+import java.util.logging.Level;
+
+/**
+ * 创建时间: 2020/01/16 15:38 <br>
+ * 作者: qiudengjiao <br>
+ * 描述: 抽象类的子类: 输出日志到消息中间件(比如kafka)
+ */
+public class MessageQueueLogger extends Logger {
+
+  private MessageQueueClient msgQueueClient;
+
+  public MessageQueueLogger(String name, boolean enabled, Level minPermittedLevel,
+      MessageQueueClient msgQueueClient) {
+    super(name, enabled, minPermittedLevel);
+    this.msgQueueClient = msgQueueClient;
+  }
+
+  @Override
+  protected void doLog(Level level, String message) {
+    // 格式化level和message,输出到消息中间件
+    msgQueueClient.send();
+  }
+}