Animated Java Arrow

Arrows.java

public class Arrows {

    public static void main(String[] args) throws InterruptedException {
        while(true){
            for(int i = 0; i < 50; i++){
                String line = "";
                for(int j = 0; j<i; j++){
                    line += "@@";
                }
                for(int j = 0; j<50-i; j++){
                    line = " " + line;
                }
                System.out.println(line);
                Thread.sleep(20);
            }
        }
    }
    
}