src/main/java/com/jpgunter/calculator/api/provider/CalculationProvider.java
/**
     * Add two numbers
     * @param num1String the first number
     * @param num2String the second number
     * @return the total
     * @throws IllegalArgumentException if either number cannot be parsed
     */
Add two numbers
@param num1String the first number
@param num2String the second number
@return the total
@throws IllegalArgumentException if either number cannot be parsed
Add two numbers @param num1String the first number @param num2String the second number @return the total @throws IllegalArgumentException if either number cannot be parsed
public String add( String num1String, String num2String ) throws IllegalArgumentException {
        BigDecimal num1 = new BigDecimal( num1String );
        BigDecimal num2 = new BigDecimal( num2String );
        return num1.add( num2 ).toPlainString();
    }
public String add ( String num1String , String num2String ) throws IllegalArgumentException { BigDecimal num1 = new BigDecimal ( num1String ) ; BigDecimal num2 = new BigDecimal ( num2String ) ; return num1 . add ( num2 ) . toPlainString ( ) ; }
Add two numbers
 @param num1String the first number
 @param num2String the second number
 @return the total
 @throws IllegalArgumentException if either number cannot be parsed
Add two numbers @param num1String the first number @param num2String the second number @return the total @throws IllegalArgumentException if either number cannot be parsed