Java 度分（DDMM.MMMM）转小数形式

public class Point_change {

public  String move_point(String jwd){
     double ret ;
     
     ret = Double.parseDouble(jwd.replace("E", "").replace("S", "").replace("N", "").replace("W", ""));
     

// System.out.println(ret/100);
double number = ret/100;
// if((int)ret/100==1||(int)ret/100==0){
// return jwd;
// }

     double decimalPart = (number - (int)number)*100;
     return String.format("%.10f", decimalPart/60+(int)number).toString();     
 }
 
 
 

}