Java String Empty emptyString(String s)

Description

Tests if a string is empty.

License

Open Source License

Parameter

Parameter	Description
s	A string to test

Return

true if s is null or empty; otherwise false

Declaration

public final static boolean emptyString(String s) 

Method Source Code

//package com.java2s;
/*//from   w w  w.  j  av  a2  s .com
 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

public class Main {
    /**
     * Tests if a string is empty.
     * @param s A string to test
     * @return <code>true</code> if <code>s</code> is null or empty;
     * otherwise <code>false</code>
     */
    public final static boolean emptyString(String s) {
        boolean expr = (s == null || s.length() == 0);
        return expr;
    }

    /**
     * Tests if a string is empty.
     * @param o A string to test
     * @return <code>true</code> if <code>o</code> is null or empty;
     * otherwise <code>false</code>
     */
    public final static boolean emptyString(Object o) {
        boolean expr = (o == null || (o instanceof String && ((String) o).length() == 0));
        return expr;
    }
}

Related

1. coerceValueIfNullOrEmpty(String s, String valueIfNullOrEmpty)
2. emptyString()
3. emptyString(final String a, final String defaultString)
4. emptyString(final String string)
5. emptyString(Object s)
6. emptyString(String s)
7. emptyString(String str)
8. emptyString(String str)
9. emptyString2Null(String stringValue)