diff --git a/center.manager/src/test/java/center/manager/test/user/ThreadFlag.java b/center.manager/src/test/java/center/manager/test/user/ThreadFlag.java
new file mode 100644
index 0000000..a7e33cc
--- /dev/null
+++ b/center.manager/src/test/java/center/manager/test/user/ThreadFlag.java
@@ -0,0 +1,28 @@
+package center.manager.test.user;
+
+public class ThreadFlag extends Thread {
+	public volatile boolean exit = false;
+
+	public void run() {
+		while (!exit) {
+			// System.out.println("i`m ok!");
+		}
+	}
+
+	public static void main(String[] args) throws Exception {
+		ThreadFlag thread = new ThreadFlag();
+		thread.start();
+		int i = 0;
+		while (true) {
+			if (i >= 50) {
+				thread.exit = true; // 终止线程thread
+				thread.join();
+				System.out.println("线程退出!");
+			}
+			System.out.println(thread.isAlive() + "  " + i);
+			sleep(500); // 主线程延迟5秒
+			i++;
+		}
+
+	}
+}
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