Example usage for java.lang String trim

Introduction

In this page you can find the example usage for java.lang String trim.

Prototype

public String trim()

Source Link

Document

Returns a string whose value is this string, with all leading and trailing space removed, where space is defined as any character whose codepoint is less than or equal to 'U+0020' (the space character).

Usage

From source file:Main.java

/**
 * Parses the given string and returns a double value. Returns null if the
 * given string is null or cannot be parsed as a double.
 *
 * @param value the string value./* ww  w.j a  v  a 2  s. com*/
 * @return a double value.
 */
public static Double parseDouble(String value) {
    if (value == null || value.trim().isEmpty()) {
        return null;
    }

    try {
        return Double.parseDouble(value);
    } catch (NumberFormatException ex) {
        return null;
    }
}

From source file:Main.java

/**
 * Displays a {@link JOptionPane} as an Input Dialog asking for a required text.
 *
 * @param title The title of the dialog.
 * @return The text written by the user.
 *///from  w w  w.ja va  2 s .  c  om
public static String askForRequiredTextUsingInputDialog(String title, String message) {
    String text = null;
    while (text == null || text.trim().equals("")) {
        text = JOptionPane.showInputDialog(null, message, title, JOptionPane.QUESTION_MESSAGE);
    }
    return text;
}

From source file:Main.java

public static boolean hasMeaningful(String value) {
    return value != null && !"".equalsIgnoreCase(value.trim()) && !"null".equalsIgnoreCase(value.trim());
}

From source file:Main.java

public static ArrayList<Integer> includeWeek(String week, String weekLine) {
    weekLine = weekLine.trim();
    ArrayList<Integer> result = new ArrayList<>();
    String[] ss = weekLine.split("@");
    for (int i = 0; i < ss.length; i++) {

        String[] s1 = ss[i].split("-");

        if (s1.length == 1 && s1[0].trim().substring(0, s1[0].trim().length() - 1).trim().equals(week)) {
            result.add(i);// w  w w . j  a  v  a2 s  .c o m
        } else if (s1.length == 2 && Integer.valueOf(s1[0].trim()) <= Integer.valueOf(week.trim()) && Integer
                .valueOf(s1[1].substring(0, s1[1].length() - 1).trim()) >= Integer.valueOf(week.trim())) {
            result.add(i);
        }
    }
    return result;
}

From source file:Main.java

public static boolean isNullEmptyOrWhitespace(String value) {
    return value == null || value.isEmpty() || value.trim().isEmpty();
}

From source file:Main.java

public static boolean isEmpty(String str) {
    if (str != null && !"".equals(str.trim())) {
        return false;
    }/*from   w  w  w . j av a 2 s.c  o  m*/
    return true;
}

From source file:Main.java

/**
 * @return true if the string is blank filled (space char filled)
 */// w w  w.  j  av a 2s . c  o m
public static boolean isBlank(String s) {
    return (s.trim().length() == 0);
}

From source file:Main.java

/**
 * @param activity/*w w w.j a v  a2  s.c o  m*/
 * @param phone
 */
public static void phone(Activity activity, String phone) {

    phone = "tel:" + phone.trim();

    Intent intent = new Intent();

    intent.setAction(Intent.ACTION_VIEW);
    intent.setData(Uri.parse(phone));

    activity.startActivity(intent);

}

From source file:Main.java

/**
 * Parses an integer silently. Returns the Integer value of the given string.
 * Returns null if the input string is null, empty or if it cannot be parsed.
 *
 * @param string the string./*from  w  ww  .  j  a v  a2s. c  om*/
 * @return an Integer.
 */
public static Integer parseInt(String string) {
    if (string == null || string.trim().isEmpty()) {
        return null;
    }

    try {
        return Integer.parseInt(string);
    } catch (NumberFormatException ex) {
        return null;
    }
}

From source file:Main.java

public static JSONArray newJSONArray(String val) {
    try {//from  ww  w. j a va 2  s .  c om
        return new JSONArray(val.trim());
    } catch (Exception e) {
        return null;
    }
}