multithreading without importing Thread class

how can a multithreaded code can be compiled succesfully without importing Thread class?

the example below is taken from marcus green mock exam 1:

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 public class Rpcraven{

    public static void main(String argv[]){

    Pmcraven pm1 = new Pmcraven("One");

    pm1.run();

    Pmcraven pm2 = new Pmcraven("Two");

    pm2.run();
 
    }

}
 
class Pmcraven extends Thread{

private String sTname="";

Pmcraven(String s){

    sTname = s;
 
}

public void run(){

    for(int i =0; i < 2 ; i++){

        try{

         sleep(1000);

        }catch(InterruptedException e){}
 
        yield();

        System.out.println(sTname);

        }
 
    }

}

Oct 22 '07 #1

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1418

JosAH

11,448

Expert 8TB

The Thread class is in the java.lang package which gets imported implicitly, just
like String, Object etc.

kind regards,

Jos

Oct 22 '07 #2

stmfc

thanks for your reply.
one more question, what is the full list of classes imported implicitly?
all classses in java.lang package?

Oct 22 '07 #3

JosAH

11,448

Expert 8TB

thanks for your reply.
one more question, what is the full list of classes imported implicitly?
all classses in java.lang package?

I don't know all classes in the java.lang package by head but yes, they're all
implicitly imported; it is as if the first line in your program looks like this:

Expand|Select|Wrap|Line Numbers

import java.lang.*;

kind regards,

Jos

Oct 22 '07 #4

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