public class xiaojie {
public static void main(String[] args) throws InterruptedException {
    int count=0;
    for (float y=2.5f;y>-2.0f;y-=0.12f){
        for (float x=-2.3f;x<2.3f;x+=0.041f){
            float a = x*x+y*y-4f;
            if ((a*a*a-x*x*y*y*y)<-0.0f){
                String str="I LOVE YOU!";
                int num =count%str.length();
                System.err.print(str.charAt(num));
                count++;
            }else{
                System.err.print(" ");
            }
        }
        System.err.println();
        Thread.sleep(100);
    }
}}

运行结果