update:demo6

com/study/demo6/ThreadDemo1.java

@@ -0,0 +1,20 @@
+package com.study.demo6;
+
+public class ThreadDemo1 {
+  static class MyThread extends Thread {
+    @Override
+    public void run() {
+      for (int i = 1; i <= 5; i++) {
+        System.out.println("当前线程：" + getName() + "，输出次数 " + i);
+      }
+    }
+  }
+
+  public static void main(String[] args) {
+    MyThread s1 = new MyThread();
+    MyThread s2 = new MyThread();
+
+    s1.start();
+    s2.start();
+  }
+}