Multithreaded recurring startup in Java

Frequently asked questions about multithreading during an interview:

Today, at the time of the test, the following code throws an exception: Java.lang.IllegalThreadStateException

public static void Main (string[] args) throws exception{        Test_thread temp = new Test_thread ();        Test_thread Temp1 = new Test_thread ();        Thread t = new Thread (temp);        thread T1 = new Thread (TEMP1);                 for (int i=0;i<50;i++) {            if (i%2 = = 0) {                t.start ();            } else {                t1.start ();    }}}

Change it down to the bottom so it runs smoothly.

public static void Main (string[] args) throws exception{        Test_thread temp = new Test_thread ();        Test_thread Temp1 = new Test_thread ();  thread t = new Thread (temp);  thread T1 = new Thread (TEMP1);          for (int i=0;i<50;i++) {            if (i%2 = = 0) {                new Thread (temp). Start ();            } else {                new thread (TEMP1). Start () ;            }        }    }

Summary: A thread cannot repeatedly invoke start (), which means that a single thread cannot be started repeatedly.

Multithreaded recurring startup in Java