/
Strings.java
52 lines (44 loc) · 1.41 KB
/
Strings.java
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/**
* Copyright 2013 Alex Yanchenko
*
* 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 org.droidparts.util;
import java.util.Collection;
public class Strings {
public static boolean isNotEmpty(CharSequence str) {
return !isEmpty(str);
}
public static boolean isEmpty(CharSequence str) {
return str == null || str.length() == 0;
}
public static <T> String join(Collection<T> coll, String separator,
String terminator) {
return join(coll.toArray(new Object[coll.size()]), separator,
terminator);
}
public static String join(Object[] arr, String separator, String terminator) {
StringBuilder sb = new StringBuilder(arr.length * 2);
for (int i = 0; i < arr.length; i++) {
sb.append(arr[i]);
if (i < arr.length - 1) {
sb.append(separator);
} else if (terminator != null && arr.length > 0) {
sb.append(terminator);
}
}
return sb.toString();
}
protected Strings() {
}
}