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/*
* Copyright 2007 ETH Zuerich, CISD
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ch.systemsx.cisd.bds;
/**
* Operations on {@link java.lang.String} that are <code>null</code> safe.
*
* @author Christian Ribeaud
*/
public final class StringUtils
{
public static final String EMPTY_STRING = "";
private StringUtils()
{
// Can not be instantiated
}
/**
* Whether given <var>value</var> is blank or not.
*/
public final static boolean isBlank(final String value)
{
return value == null || value.trim().length() == 0;
}
/**
* Whether given <var>value</var> is empty or not.
*/
public final static boolean isEmpty(final String value)
{
return value == null || value.length() == 0;
}
/** Returns an empty if given <var>stringOrNull</var> is <code>null</code>. */
public final static String emptyIfNull(final String stringOrNull)
{
return stringOrNull == null ? EMPTY_STRING : stringOrNull;
}
}