Hello So I have a entire class called tractor with different data's stored in it but now I'm suppose to create an object call tractor with a zero parameter constructor but This is the code I have so far and its giving em errors

First off this my Tractor Class which is in a different file: 

```
import java.util.Scanner;
class Tractor
{
   private int RentalRate;
   private int RentalDays;
   private int VehicleID;
   private int RentalProfit;

    public void setRentalRate(int r)
    {
      Scanner input = new Scanner(System.in);
      System.out.println("What's the Rental Rate?");
      int num = input.nextInt();
      num = r;
      if(r<0 || r >1000)

         RentalRate = r;

         RentalRate= 1;  
    } 

    public int getRentalRate() 
    {
      return RentalRate;
    }  

    public void setVehicleID(int v)
    {
      Scanner input = new Scanner(System.in);
      System.out.println("What's the vehicleID?");
      int num1 = input.nextInt();
      num1 = v;
      if(v<0)

         VehicleID = v;

         VehicleID = 1;    
    }

    public int getVehicleID()
    {
      return VehicleID;  
    }

    public void setRentalDays(int d)
    {
      Scanner input = new Scanner(System.in);
      System.out.println("How many rental days?");
      int num2 = input.nextInt();
      num2 = d;
      if(d<0)

         RentalDays = d;

         RentalDays = 1;    
    }

    public int getRentalDays()
    {
      return RentalDays;
    }

     public String toString() 
     {
       String str;
       str = "RentalDays:" + RentalDays +"\nRenalRate:" + RentalRate + "\nVehicleID " + VehicleID; 
       return str;      
     }

    public void RentalProfit(int RentalRate, int RentalDays)  
    {
      RentalProfit = RentalRate * RentalDays; 
    }      

```

}

```
import java.util.Scanner;

public class testTractor
{
   public static void main(String[] args)
   {
      public tractor()
      {
         this.RentalDays = d;
         this.RentalRate = r;
         this.VehicleID = v;
      }
 }
}

```

The error is : 

```
testTractor.java:7: error: illegal start of expression
      public tractor()
      ^
testTractor.java:7: error: ';' expected
      public tractor()
                      ^
2 errors

```