public class Main {

  public static void main(String[] args) {

    System.out.println(Math.asin(0.64));

    System.out.println(Math.asin(-0.4));

    System.out.println(Math.asin(0));

    System.out.println(Math.asin(1));

    System.out.println(Math.asin(-1));

    System.out.println(Math.asin(2)); 

  }

}

​