In Java Please. I keep getting this error. How do i fix it please.

Mountain.java:$1$: error: duplicate class: Mountain

public class Mountain $\{$

$^$

$1$ error

import java.util.ArrayList;

import java.util.List;

class Mountain $\{$

private String name;

private String country;

private double elevation;

public Mountain$($String name, String country, double elevation$)\{$

this.name $=$ name;

this.country $=$ country;

this.elevation $=$ elevation;

$\}$

public String getName$()\{$

return name;

$\}$

public String getCountry$()\{$

return country;

$\}$

public double getElevation$()\{$

return elevation;

$\}$

$//$ Define a method to convert the elevation from feet to meters.

public double toMeters$()\{$

return elevation $/3\mathrm{.}2808$;

$\}$

$\}$

class Main $\{$

public static void main$($String$[]$ args$)\{$

List mountains $=$ new ArrayList$<>()$;

mountains.add$($new Mountain$("$Chimborazo$",$ "Ecuador", $20549))$;

mountains.add$($new Mountain$("$Matterhorn$",$ "Switzerland", $14692))$;

mountains.add$($new Mountain$("$Olympus$",$ "Greece $($Macedonia$)",9573))$;

mountains.add$($new Mountain$("$Everest$",$ "Nepal", $29029))$;

mountains.add$($new Mountain$("$Mount Marcy $-$ Adirondacks", "United States", $5344))$;

mountains.add$($new Mountain$("$Mount Mitchell $-$ Blue Ridge", "United States", $6684))$;

mountains.add$($new Mountain$("$Zugspitze$",$ "Switzerland", $9719))$;

Mountain minElevationMountain $=$ minElevation$($mountains$)$;

System.out.println$("$Mountain$\backslash$tCountry$\backslash$tElevation $($ft$)\backslash$tElevation $($m$)")$;

for $($Mountain mountain : mountains$)\{$

System.out.printf$("\%$s$\backslash$t$\%$s$\backslash$t$\%\mathrm{.}0$f$\backslash$t$\%\mathrm{.}2$f$\%$n$",$ mountain.getName$(),$ mountain.getCountry$(),$ mountain.getElevation$(),$ mountain.toMeters$())$;

$\}$

System.out.printf$("\%$nShortest mountain: $\%$s with elevation $\%\mathrm{.}0$f ft $(\%\mathrm{.}2$f m$)\%$n$",$ minElevationMountain.getName$(),$ minElevationMountain.getElevation$(),$ minElevationMountain.toMeters$())$;

$\}$

public static Mountain minElevation$($List mountains$)\{$

Mountain minElevationMountain $=$ mountains.get$(0)$;

for $($Mountain mountain : mountains$)\{$

if $($mountain$.$getElevation$()<$ minElevationMountain.getElevation$())\{$

minElevationMountain $=$ mountain;

$\}$

$\}$

return minElevationMountain;

$\}$

$\}$