how to write a main program for the following code

public class JaroWinkler

{
private String compOne;

 private String compTwo;  



 private String theMatchA = "";  

 private String theMatchB = "";  

private int mRange = -1;  



 public JaroWinkler()  

 {  

 }  



public JaroWinkler(String s1, String s2)  

 {  

    compOne = s1;  

    compTwo = s2;  

 }  



 public double getSimilarity(String s1, String s2)  

 {  

     compOne = s1;  

     compTwo = s2;  



     mRange = Math.max(compOne.length(), compTwo.length()) / 2 - 1;  



     double res = -1;  



     int m = getMatch();  

    int t = 0;  

     if (getMissMatch(compTwo,compOne) > 0)  

    {  

         t = (getMissMatch(compOne,compTwo) / getMissMatch(compTwo,compOne));  

     }  



    int l1 = compOne.length();  

    int l2 = compTwo.length();  


     double f = 0.3333;  

    double mt = (double)(m-t)/m;  

    double jw = f * ((double)m/l1+(double)m/l2+(double)mt);  

    res = jw + getCommonPrefix(compOne,compTwo) * (0.1*(1.0 - jw));  


     return res;  
}  


 private int getMatch()  

 {  



     theMatchA = "";  

    theMatchB = "";  

    int matches = 0;  

    for (int i = 0; i < compOne.length(); i++)  

     {  

      //Look backward  

         int counter = 0;  
        while(counter <= mRange && i >= 0 && counter <= i)  

         {  


            {  

                matches++;  

                theMatchA = theMatchA + compOne.charAt(i);  

                theMatchB = theMatchB + compTwo.charAt(i);  

           }  

            counter++;                  
        }  



       //Look forward  
       counter = 1;  

         while(counter <= mRange && i < compTwo.length() && counter + i < compTwo.length())  
         {  

             if (compOne.charAt(i) == compTwo.charAt(i + counter))  

             {  
                 matches++;  

                theMatchA = theMatchA + compOne.charAt(i);  
                theMatchB = theMatchB + compTwo.charAt(i);  
             }  

            counter++;  

         }  

     }  

    return matches;  

}  



 private int getMissMatch(String s1, String s2)  
{  
    int transPositions = 0;  



     for (int i = 0; i < theMatchA.length(); i++)  
     {  

         //Look Backward  

        int counter = 0;  

        while(counter <= mRange && i >= 0 && counter <= i)  
         {  

            if (theMatchA.charAt(i) == theMatchB.charAt(i - counter) && counter > 0)  

            {  

                transPositions++;  
            }  

            counter++;  

        }  



         //Look forward  

        counter = 1;  

         while(counter <= mRange && i < theMatchB.length() && (counter + i) < theMatchB.length())  

        {  

             if (theMatchA.charAt(i) == theMatchB.charAt(i + counter) && counter > 0)  

            {  

                transPositions++;  

            }  

             counter++;  

         }  
    }  

    return transPositions;  

 }  


private int getCommonPrefix(String compOne, String compTwo)  

{  

     int cp = 0;  
     for (int i = 0; i < 4; i++)  

     {  

         if (compOne.charAt(i) == compTwo.charAt(i)) cp++;  
    }  

    return cp;  

 }

}