update:demo6

com/study/demo6/ThreadDemo2.java

@@ -0,0 +1,22 @@
+package com.study.demo6;
+
+public class ThreadDemo2 {
+  static class CountTask implements Runnable {
+    @Override
+    public void run() {
+      for (int i = 1; i <= 10; i++) {
+        System.out.println(Thread.currentThread().getName() + " 计数：" + i);
+        try {
+          Thread.sleep(500);
+        } catch (InterruptedException e) {
+          e.printStackTrace();
+        }
+      }
+    }
+  }
+
+  public static void main(String[] args) {
+    Thread t = new Thread(new CountTask(), "计数线程");
+    t.start();
+  }
+}