functions for test automation in java with examples

public static String rep(String input,String pattern,HashMap repVals)
{
    Pattern patt = Pattern.compile(pattern);
    Matcher m = patt.matcher(input);
    String retVal = input;
    while(m.find())
    {
        String temp = m.group(0);
        String newValue = "";
        if(repVals.containsKey(temp))
            newValue = repVals.get(temp).toString();
        retVal = retVal.replace(temp,newValue );
    }

    return retVal;
}

public static void main(String rs[])
{
    String ip = "This PO {{var1}} has order of value {{var2}}";

    // generally this is generated from some other code. 
    //for demonstration purpose we are creating it here.
    HashMap reps = new HashMap();
    reps.put("{{var1}}","1234");
    reps.put("{{var2}}","100 USD");

    //now call the method
    //CM below is the class name and contains the 
    //reusable methods declared in static scope. 
    String transformedString = CM.rep(ip,"[a-zA-Z]+[0-9]+",reps);
    System.out.println(transformedString);
}

public static String today(String format)
{
     Date date=java.util.Calendar.getInstance().getTime(); 
 
     // example format: "dd-MMM-YYYY HH:mm:ss"
     SimpleDateFormat formatter = new SimpleDateFormat(format); 
    String dt = formatter.format(date);
    return dt;
}

public static void main(String rs[])
{
    System.out.println(CM.today("dd-MMM-YYYY"));
}