Guys this code is working in my laptop but in solo learn its not working check this all of you and tell me reason?

Question

public class Piramid extends Thread
{
public void run(){
int i,j,k;
for(i=1;i<10;i++){
for( k=i;k<10;k++)
System.out.print(" ");
try{
for( j=1;j<=i;j++){
sleep(400);
System.out.print(" *");} }
catch(InterruptedException e){
System.out.println("some error occur");
} System.out.println(); }}
public static void main(String a []){
Piramid o=new Piramid();
o.start ();}}

Answer 1

sololearn has a sh! t compiler. as long as it works on your laptop it's fine

Answer 2

ya u r right