ThreadCountTest.java

package com.koltsa.utilities;

public class ThreadCountTest {

    private static int threadCount = 0;

    /**
     * Checks how many threads current JVM supports by sequentially spawning the threads and ...
     * ... printing out their number into standard output.
     */
    public static void checkHowManyThreadsJvmCouldHave() {
        Object monitor = new Object();
        for (;;) {
            new Thread(() -> {
                synchronized (monitor) {
                    ThreadCountTest.threadCount++;
                    System.out.printf("Thread count: %d%n", ThreadCountTest.threadCount++);
                }
                for (;;) {
                    // hold thread in active state
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }).start();
        }
    }
}