program to print 1A2B3C4D5E6F7G8H9I10J

class A extends Thread {

            public void run() {

                        int i;

                        for(i=1;i<=10;i++) {

                                    System.out.print(i);    

                                    try {

                                                sleep(1000);

                                    } catch(Exception e){}

                        }

            }

}

class B extends Thread {

            public void run() {

                        int i;

                        for(i=65;i<=74;i++) {

                                    System.out.print((char)i);

                                    try {

                                                sleep(1000);

                                    } catch(Exception e){}

                        }

            }

}

class Multithread {

            public static void main(String args[]) {

                        A t1=new A();

                        B t2=new B ();

                        t1.start();

                        t2.start();

            }

}