java - java中如何写上标文本？

Question

我想在加速度的输出中以米/秒(2)为单位显示。我应该使用哪个关键字？

public class Distance {
public static void main(String[] args)
{
    int distance,init_velocity,time,acceleration;
    acceleration=10;
    init_velocity=20;
    time=20;
    distance=(init_velocity*time)+((acceleration*time*time)/2);
    System.out.println("-------------------------------------------------------------------------");
    System.out.println("Distance travelled by John ="+ distance+"  "+"meters" );
    System.out.println("-------------------------------------------------------------------------");
  }  
}

Answer 1

尝试:System.out.println("米/秒\u00b2");