If the constructor has a void in front of it, the java compiler doesnt recognize the
constructor at all. Here is the example (with ==> pointer where defn) and output:

// Destroying a thread.

import java.io.PipedOutputStream;
import java.io.PipedInputStream;

class speaker extends Thread {
  private int speakerNumber;

==> public void speaker(int i, PipedOutputStream b, PipedInputStream c) {
    speakerNumber = i;
  }

  public void run() {
    int i = 0;

    if (speakerNumber == 1)
      stop();
    while(++i < speakerNumber)
      System.out.println("Hello World #" + speakerNumber);
  }
}

class demo {
  public static void main(String args[]) {
    speaker speaker1, speaker2;
    PipedOutputStream pout;
    PipedInputStream pin;

    pout = new PipedOutputStream();
    pin = new PipedInputStream();

    speaker1 = new speaker(1, pout, pin);
    speaker1.start();
    speaker2 = new speaker(2, pout, pin);
    speaker2.start();
  }
}

Output:
======
[124][tmp] ? javac threads.java
threads.java:32: No constructor matching speaker(int, java.io.PipedOutputStream, java.io.PipedInputStream) found in class speaker.
    speaker1 = new speaker(1, pout, pin);
               ^
threads.java:34: No constructor matching speaker(int, java.io.PipedOutputStream, java.io.PipedInputStream) found in class speaker.
    speaker2 = new speaker(2, pout, pin);
               ^
2 errors
[125][tmp] ?