当我用 jdk1.8 运行以下代码时没有问题，但是当我用 jdk11 运行它时它会阻塞

问：

public class Test {
    public static int num = 0;

    public static void main(String[] args) {
        new Thread(Test::printer, "t0").start();
        new Thread(Test::printer, "t1").start();
        new Thread(Test::printer, "t2").start();
    }

    public static void printer() {
        synchronized (Test.class) {
            while (num < 100) {
                if (Thread.currentThread().getName().contains(String.valueOf(num % 3))) {
                    System.out.println(Thread.currentThread().getName() + ": " + num++);

                }
                Test.class.notifyAll();
                try {
                    Test.class.wait();
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
            Test.class.notifyAll();
        }
    }
}

当我用 jdk1.8.It 可以输出 0 到 99 运行以下代码时没有问题，但是当我使用 jdk11 运行代码时，它会在 2 或 3 停止，我用来检查线程状态，结果如下：jstack

"Monitor Ctrl-Break" #21 daemon prio=5 os_prio=0 cpu=15.63ms elapsed=10.26s tid=0x000001ccc56cf800 nid=0x5424 runnable  [0x000000a410efe000]
   java.lang.Thread.State: RUNNABLE
        at java.net.SocketInputStream.socketRead0([email protected]/Native Method)
        at java.net.SocketInputStream.socketRead([email protected]/SocketInputStream.java:115)
        at java.net.SocketInputStream.read([email protected]/SocketInputStream.java:168)
        at java.net.SocketInputStream.read([email protected]/SocketInputStream.java:140)
        at sun.nio.cs.StreamDecoder.readBytes([email protected]/StreamDecoder.java:284)
        at sun.nio.cs.StreamDecoder.implRead([email protected]/StreamDecoder.java:326)
        at sun.nio.cs.StreamDecoder.read([email protected]/StreamDecoder.java:178)
        - locked <0x00000007181038c8> (a java.io.InputStreamReader)
        at java.io.InputStreamReader.read([email protected]/InputStreamReader.java:181)
        at java.io.BufferedReader.fill([email protected]/BufferedReader.java:161)
        at java.io.BufferedReader.readLine([email protected]/BufferedReader.java:326)
        - locked <0x00000007181038c8> (a java.io.InputStreamReader)
        at java.io.BufferedReader.readLine([email protected]/BufferedReader.java:392)
        at com.intellij.rt.execution.application.AppMainV2$1.run(AppMainV2.java:56)

"t0" #22 prio=5 os_prio=0 cpu=0.00ms elapsed=10.25s tid=0x000001ccc56d0000 nid=0x6560 in Object.wait()  [0x000000a4110fe000]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at java.lang.Object.wait([email protected]/Native Method)
        - waiting on <0x0000000718113e10> (a java.lang.Class for com.chen.Test)
        at java.lang.Object.wait([email protected]/Object.java:328)
        at com.chen.Test.printer(Test.java:21)
        - waiting to re-lock in wait() <0x0000000718113e10> (a java.lang.Class for com.chen.Test)
        at com.chen.Test$$Lambda$14/0x0000000800066840.run(Unknown Source)
        at java.lang.Thread.run([email protected]/Thread.java:834)

"t1" #23 prio=5 os_prio=0 cpu=3718.75ms elapsed=10.25s tid=0x000001ccc56d1000 nid=0x7b8 in Object.wait()  [0x000000a4111ff000]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at java.lang.Object.wait([email protected]/Native Method)
        - waiting on <no object reference available>
        at java.lang.Object.wait([email protected]/Object.java:328)
        at com.chen.Test.printer(Test.java:21)
        - waiting to re-lock in wait() <0x0000000718113e10> (a java.lang.Class for com.chen.Test)
        at com.chen.Test$$Lambda$15/0x0000000800066c40.run(Unknown Source)
        at java.lang.Thread.run([email protected]/Thread.java:834)

"t2" #24 prio=5 os_prio=0 cpu=4140.63ms elapsed=10.25s tid=0x000001ccc56d2000 nid=0x6620 in Object.wait()  [0x000000a4112ff000]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait([email protected]/Native Method)
        - waiting on <no object reference available>
        at java.lang.Object.wait([email protected]/Object.java:328)
        at com.chen.Test.printer(Test.java:21)
        - waiting to re-lock in wait() <0x0000000718113e10> (a java.lang.Class for com.chen.Test)
        at com.chen.Test$$Lambda$16/0x0000000800066040.run(Unknown Source)
        at java.lang.Thread.run([email protected]/Thread.java:834)

t0 和 t1 都被阻止了，但是它们都没有得到 cpu，那么谁能告诉我为什么我得到了这个结果？