DataValidator.java

Source Code‎ > ‎src‎ > ‎in.co.sunrays.proj1‎ > ‎util‎ > ‎

package in.co.sunrays.proj1.util;

/**
* This Class validates input data
*
* @author SUNRAYS Technologies
* @version 1.0
* @Copyright (c) SUNRAYS Technologies
*/
public class DataValidator {

    /**
    * Checks if value is Null
    *
    * @param val
    * @return
    */
    public static boolean isNull(String val) {
        if (val == null || val.trim().length() == 0) {
            return true;
        } else {
            return false;
        }
    }

    /**
    * Checks if value is NOT Null
    *
    * @param val
    * @return
    */
    public static boolean isNotNull(String val) {
        return !isNull(val);
    }

    /**
    * Checks if value is an Integer
    *
    * @param val
    * @return
    */
    public static boolean isInteger(String val) {
        if (isNotNull(val)) {
            try {
                int i = Integer.parseInt(val);
                return true;
            } catch (NumberFormatException e) {
                return false;
            }
        } else {
            return false;
        }
    }

    /**
    * Checks if value is Long
    *
    * @param val
    * @return
    */
    public static boolean isLong(String val) {
        if (isNotNull(val)) {
            try {
                long i = Long.parseLong(val);
                return true;
            } catch (NumberFormatException e) {
                return false;
            }

        } else {
            return false;
        }
    }

    /**
    * Checks if value is valid Email ID
    *
    * @param val
    * @return
    */
    public static boolean isEmail(String val) {
        String emailreg = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
        if (isNotNull(val)) {
            try {
                return val.matches(emailreg);
            } catch (NumberFormatException e) {
                return false;
            }
        } else {
            return false;
        }
    }

    /**
    * Test above methods
    *
    * @param args
    */
    public static void main(String[] args) {
        System.out.println("Not Null 1" + isEmail("rahul.sahu@sunrays.co.in"));
        System.out.println("Not Null 2" + isNotNull("ABC"));
        System.out.println("Not Null 3" + isNotNull(null));
        System.out.println("Not Null 4" + isNull("123"));

        System.out.println("Is Int " + isInteger(null));
        System.out.println("Is Int " + isInteger("ABC1"));
        System.out.println("Is Int " + isInteger("123"));
        System.out.println("Is Int " + isNotNull("123"));
    }

}

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