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SIN.java

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package net.threebit.utils.sosc ; 

public class SIN extends Validatable
{
    public SIN(final String sin)
    {
       super(sin, "SIN");
    }

    public boolean equals(Object o)
    {
       if (!(o instanceof SIN))
       {
           return (false);
       }
       return (super.equals(o));
    }
        
    public static boolean validate(String num)
    {
         return(new SIN(num).validate());
    }
    
    protected boolean checkDigits(final int[] digits)
    {
        int sumEven;
        int sumOdd;
        int sum;
        
        sumEven = 0;
        sumOdd = 0;
        sum = 0;         
        
        for (int i = (number.length() - 2); i >= 0; i--)
        {
            if ((((number.length() - 2) - i) % 2) == 0)
            {
                sumEven += Utils.add(digits[i] * 2);
            }
            else
            {
                sumOdd += digits[i];
            }
        }
        
        sum = sumEven + sumOdd;
        
        while ((sum % 10) != 0)
        {
            sum++;
        }
        
        if ((sum - (sumEven + sumOdd)) == digits[number.length() - 1])
        {
            return(true);
        }
        return (false);
    }
        
    protected boolean checkSize()
    {
        return (9 == number.length());
    }
}

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