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 isNullOrEmpty(String s) {
    return s == null || s.trim().isEmpty();
}

From source file:Main.java

public static boolean isNumeric(String str) {
    if (str == null || (str.trim().equals(""))) {
        return false;
    }//  ww  w  .j a v a  2 s. c  o  m
    Pattern pattern = Pattern.compile("[0-9]*");
    return pattern.matcher(str).matches();
}

From source file:Main.java

public static boolean checkStringNotNull(String text) {
    if (text != null && !(text.trim().equals(""))) {
        return true;
    } else {// w w  w  . j  a va2s  .c o m
        return false;
    }
}

From source file:Main.java

public static boolean isTextXML(String text) {
    text = text.trim();
    if (!(text.startsWith("<") && text.endsWith(">")))
        return false; //If text doesn't begin with "<" it's not XML

    int firstClose = text.indexOf(">");
    int lastOpen = text.lastIndexOf("<");

    if (lastOpen == 0 && text.lastIndexOf("/") == firstClose - 1)
        return true; //Example "<DIMES />
    if (text.substring(1, firstClose + 1).equals(text.substring(lastOpen + 2)))
        return true; //<XML> blah </XML>

    return false;
}

From source file:Main.java

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

From source file:Main.java

public static String checkString(String text) {
    if (text != null && !(text.trim().equals(""))) {
        return text.trim();
    } else {/* w ww . ja v a 2s .c  o  m*/
        return "";
    }
}

From source file:Main.java

public static boolean isEmail(String email) {
    if (email == null || email.trim().length() == 0)
        return false;
    return EMAILER.matcher(email).matches();
}

From source file:Main.java

public static boolean isEmail(String email) {
    if (email == null || email.trim().length() == 0)
        return false;
    return emailPat.matcher(email).matches();
}

From source file:Main.java

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

From source file:Main.java

/**
 * A method to check whether a string is null or empty.
 *
 * @param String ./*from  www .j a  v  a2  s  .c  om*/
 * @return boolean true or false.
 */
public static boolean isNullOrEmpty(String s) {
    return s == null ? true : (s.trim().length() <= 0);
}