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

public static boolean isNotEmpty(String s) {
    return s != null && s.length() != 0 && !s.trim().equals("") && !s.trim().equals("null");
}

From source file:Main.java

/**
 * Check if a string is empty (length == 0)
 *
 * @param string , to be checked//from   w  ww.j a  v  a 2 s.  c  o  m
 * @return true if empty
 */
public static boolean isEmpty(String string) {
    if (string == null || string.trim().length() == 0) {
        return true;
    }
    return false;
}

From source file:Main.java

public static boolean isWholeNumber(String string) {
    if (string != null && !string.trim().isEmpty()) {
        return string.matches("\\d*");
    }//from   w ww  . jav  a2 s.c om

    else {
        return false;
    }
}

From source file:Main.java

public static void setText(View view, String val) {
    if (val == null || val.trim().length() < 1)
        return;/*from   w w  w.  jav  a  2s. c  o  m*/
    if (view instanceof TextView) {
        ((TextView) view).setText(val);
    } else if (view instanceof EditText) {
        ((EditText) view).setText(val);
    }
}

From source file:Main.java

public static String fixLastSlash(String str) {
    String res = str == null ? "/" : str.trim() + "/";
    if (res.length() > 2 && res.charAt(res.length() - 2) == '/')
        res = res.substring(0, res.length() - 1);
    return res;//  ww  w . j  a v  a  2s . c  o  m
}

From source file:Main.java

public static String[] getIpAndPort(String ip) {
    if (ip == null || ip.trim().length() < 4) {
        return null;
    }//from   w w  w.  j a  va  2  s  .  c om
    String[] strs = null;

    int index = ip.indexOf(":");
    if (index != -1) {
        strs = ip.split(":");
    } else {
        strs = new String[] { ip, "80" };
    }
    return strs;
}

From source file:Main.java

public static Double getDouble(JTextField txt, Double defaultVal) {
    String str = txt.getText();
    if (str.trim().length() <= 0)
        return defaultVal;

    double val = 0;
    try {/*from   ww  w .j a  v a2 s.  com*/
        val = Double.parseDouble(str);
    } catch (NumberFormatException ex) {
    }
    return new Double(val);
}

From source file:Main.java

public static boolean notEmptyString(Object obj) {
    if (!(obj instanceof String)) {
        return false;
    }//www  .j a  v a  2  s  .  c o m
    String str = (String) obj;
    return str.trim().length() > 0;
}

From source file:Main.java

public static boolean isEmail(String email) {
    if (email == null || email.trim().length() == 0)
        return false;
    String str = "^([a-zA-Z0-9_\\-\\.]+)@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\\]?)$";
    Pattern p = Pattern.compile(str);
    Matcher m = p.matcher(email);
    return m.matches();
}

From source file:Main.java

private static void ckeckNullPackageName(String packageName) {
    if (packageName == null || packageName.trim().length() == 0)
        throw new NullPointerException(ERROR_MESSAGE);
}