/***************************************************************************
* Copyright 2006-2016 by Christian Ihle *
* contact@kouchat.net *
* *
* This file is part of KouChat. *
* *
* KouChat 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 3 of *
* the License, or (at your option) any later version. *
* *
* KouChat 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 KouChat. *
* If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
package net.usikkert.kouchat.util;
import org.jetbrains.annotations.NonNls;
/**
* Contains utility methods for validating input.
*
* @author Christian Ihle
*/
public final class Validate {
/**
* Private constructor. Only static methods in this class.
*/
private Validate() {
}
/**
* Checks if <code>obj</code> is <code>null</code>, and throws
* an {@link IllegalArgumentException} if that is true.
*
* @param obj The object to check.
* @param errorMsg The error message to use in the exception.
*/
public static void notNull(final Object obj, @NonNls final String errorMsg) {
if (obj == null) {
throw new IllegalArgumentException(errorMsg);
}
}
/**
* Checks if <code>text</code> is <code>null</code> or empty,
* and throws an {@link IllegalArgumentException} if that is true.
*
* @param text The string to check.
* @param errorMsg The error message to use in the exception.
*/
public static void notEmpty(final String text, @NonNls final String errorMsg) {
if (text == null || text.trim().length() == 0) {
throw new IllegalArgumentException(errorMsg);
}
}
}