From fb4d4f27a3050f2e72f847e32a6136dcd6be8b34 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Tue, 10 Mar 2026 11:04:38 +0800
Subject: [PATCH] =?UTF-8?q?=E8=BF=9B=E9=98=B6day06-=E7=BA=BF=E7=A8=8B?=
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---
 .../src/com/inmind/thread_pool10/Demo12.java  | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 javaSE-day06/src/com/inmind/thread_pool10/Demo12.java

diff --git a/javaSE-day06/src/com/inmind/thread_pool10/Demo12.java b/javaSE-day06/src/com/inmind/thread_pool10/Demo12.java
new file mode 100644
index 0000000..02eb27a
--- /dev/null
+++ b/javaSE-day06/src/com/inmind/thread_pool10/Demo12.java
@@ -0,0 +1,34 @@
+package com.inmind.thread_pool10;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+/*
+线程池的创建--方式二Executors
+    Executors的静态方法：
+    1.static ExecutorService newFixedThreadPool(int nThreads) 创建一个固定线程的线程池
+    2.static ExecutorService newSingleThreadExecutor() 创建一个只有一个线程的线程池，如果该线程出现异常，那么线程池主动创建一个新的替代
+    3.static ExecutorService newCachedThreadPool() 创建出随任务增加而增加线程的线程池，如果一个线程执行任务之后空闲了60s，这个线程就会被回收
+
+注意：在实际开发中，不推荐使用Executors来创建线程池，工具类创建线程的底层其实就是ThreadPoolExecutor构造方法，只不过参数不同。
+咱们的线程池的参数，要根据不同的业务来动态调整（而不是写死）
+ */
+public class Demo12 {
+    public static void main(String[] args) {
+        ExecutorService threadPool = Executors.newFixedThreadPool(3);
+        MyRunnable task = new MyRunnable();
+        //将任务交给线程池的核心线程处理
+        threadPool.execute(task);
+        threadPool.execute(task);
+        threadPool.execute(task);
+        //3个核心线程被占用，4个任务队列
+        threadPool.execute(task);
+        threadPool.execute(task);
+        threadPool.execute(task);
+        threadPool.execute(task);
+        //核心线程和任务队列都占满，创建临时线程
+        threadPool.execute(task);
+        threadPool.execute(task);
+
+    }
+}