Update

src/多线程/ThreadSafeTest.java

+package 多线程;
+
+// !/usr/bin/env jdk1.8
+// encoding:utf-8
+//@software:IntelliJ IDEA
+//@pack:多线程
+//@user:彭友聪
+//@date:2019/07/18
+//@time:上午 9:10
+//@project:IDEA_JAVA
+//@file:ThreadSafeTest.java
+//Author:御承扬
+//email:2923616405@qq.com
+
+
+public class ThreadSafeTest implements Runnable {
+    private int num = 10; // 设置当前票总数
+
+    public final void run() {
+        while (true) {
+            if (num > 0) {
+                try {
+                    Thread.sleep( 100 );
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+                System.out.printf( "%s票数%d\n", Thread.currentThread().getName(), num );
+                num--;
+            }
+        }
+    }
+
+    public static void main(String[] args) {
+        ThreadSafeTest t = new ThreadSafeTest();
+        Thread tA = new Thread( t,"线程一" );
+        Thread tB = new Thread( t,"线程二" );
+        Thread tC = new Thread( t,"线程三" );
+        Thread tD = new Thread( t,"线程四" );
+        // 启动线程
+        tA.start();
+        tB.start();
+        tC.start();
+        tD.start();
+    }
+}