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 isEmpty(String str) {
    return str == null || str.trim().length() == 0 || str.trim().equals("null");
}

From source file:Main.java

/**
 * Replaces common newline characters like \n, \r, \r\n to the HTML line
 * break tag <br>.//w  w w . j  a v a2s. co m
 *
 * @param text the text to substitute.
 * @return the substituted text.
 */
public static String htmlNewline(String text) {
    if (text == null || text.trim().isEmpty()) {
        return null;
    }

    return text.replaceAll("(\n|\r|\r\n)", "<br>");
}

From source file:Main.java

public static boolean isEmpty(String str) {
    return str == null || str.trim().length() == 0 || "".equals(str);
}

From source file:Main.java

/**
 * Returns null if the given string is not null and contains no characters,
 * the string itself otherwise.//from  w  ww  .j a va 2s  .  c o  m
 *
 * @param string the string.
 * @return null if the given string is not null and contains no characters,
 * the string itself otherwise.
 */
public static String nullIfEmpty(String string) {
    return string != null && string.trim().length() == 0 ? null : string;
}

From source file:Main.java

public static boolean isEmpty(String str) {
    if (str == null || "".equals(str.trim())) {
        return true;
    }/* w  w w.java  2  s . c om*/
    return false;
}

From source file:Main.java

public static String textIsNull(String text) {
    if (text == null || "".equals(text.trim()) || "null".equalsIgnoreCase(text.trim())) {
        return "";
    }/*from w  w  w  .ja  va2  s.  c  o m*/
    return text;
}

From source file:Main.java

/**
 * Calculates a key name from a file name.
 * @param friendlyName/*w  w w  . jav a2 s  . co  m*/
 * @return a file system friendly name for this password key
 */
public static String calculateKey(String friendlyName) {
    friendlyName = friendlyName.trim().toLowerCase();
    friendlyName = friendlyName.replaceAll("\\Q \\E", "-");
    friendlyName = friendlyName.replaceAll("[!@#$%^&*()+\"]", "_");
    return friendlyName;
}

From source file:Main.java

public static boolean isEmpty(String s) {
    return s == null || s.length() == 0 || s.trim().equals("") || s.trim().equals("null");
}

From source file:Main.java

public static boolean isPhone(String phoneNum) {
    if (phoneNum == null || phoneNum.trim().length() == 0)
        return false;
    return phone.matcher(phoneNum).matches();
}

From source file:Main.java

public static boolean isNullOrEmptyWithTrim(String source) {
    return null == source || "".equals(source.trim());
}