How to do constructor overloading in Java

public class Cars
{
  String carname;
  int model;
  int mileage;
Cars()
{
  carname="BMW";
  model=2021;
}
Cars(String s,int i)
{
  carname=s;
  model=i;
}
Cars(String r, int y,int t)
{
    carname=r;
    model=y;
    mileage=t;
}
public static void main(String args[])
{
 Cars c1=new Cars(); // calling with deafault constructor
 System.out.println("Default Constructor : ");
 System.out.println("Car Name : " +c1.carname +"  "+"Car Model : " +c1.model);
 System.out.println();
 
 
 Cars c2=new Cars("Suzuki",2019); // calling with parameterized overloaded constructor;
 System.out.println("This is the Overloaded Constructor with two parameters : ");
 System.out.println("Car Name : " +c2.carname+"  "+"Car Model : " +c2.model);
 System.out.println();
 
 Cars c3=new Cars("Suzuki",2020,20); // calling with parameterized overloaded constructor;
 System.out.println("This is the Overloaded Constructor with three parameters : ");
 System.out.println("Car Name : " +c3.carname+"  "+"Car Model : " +c3.model+" "+"Mileage : "+c3.mileage);
 
}
 }