Android List Join join(List strList, String separator)

Description

join

License

Apache License

Declaration

public static String join(List<String> strList, String separator) 

Method Source Code

/**/* w ww .  java  2 s  .co m*/
 * Copyright 2013 ??????
 *
 * 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.
 */

import java.net.MalformedURLException;
import java.net.URL;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main{
    public static final String EMPTY = "";
    
    public static String join(String[] strArray, char separator) {
        StringBuilder sb = new StringBuilder();
        if (strArray != null) {
            boolean isFirst = true;
            for (int i = 0; i < strArray.length; i++) {
                if (isFirst) {
                    isFirst = false;
                } else {
                    sb.append(separator);
                }
                if (StringUtil.isEmpty(strArray[i])) {
                    sb.append(EMPTY);
                } else {
                    sb.append(strArray[i]);
                }
            }
        }
        return sb.toString();
    }
    
    public static String join(String[] strArray, String separator) {
        StringBuilder sb = new StringBuilder();
        if (strArray != null) {
            boolean isFirst = true;
            for (int i = 0; i < strArray.length; i++) {
                if (isFirst) {
                    isFirst = false;
                } else {
                    sb.append(separator);
                }
                if (StringUtil.isEmpty(strArray[i])) {
                    sb.append(EMPTY);
                } else {
                    sb.append(strArray[i]);
                }
            }
        }
        return sb.toString();
    }
    
    public static String join(List<String> strList, String separator) {
        StringBuilder sb = new StringBuilder();
        if (strList != null && !strList.isEmpty()) {
            boolean isFirst = true;
            for (String str : strList) {
                if (isFirst) {
                    isFirst = false;
                } else {
                    sb.append(separator);
                }
                if (StringUtil.isEmpty(str)) {
                    sb.append(EMPTY);
                } else {
                    sb.append(str);
                }
            }
        }
        return sb.toString();
    }
    public static String join(Set<String> strList, String separator) {
        StringBuilder sb = new StringBuilder();
        if (strList != null && !strList.isEmpty()) {
            boolean isFirst = true;
            for (String str : strList) {
                if (isFirst) {
                    isFirst = false;
                } else {
                    sb.append(separator);
                }
                if (StringUtil.isEmpty(str)) {
                    sb.append(EMPTY);
                } else {
                    sb.append(str);
                }
            }
        }
        return sb.toString();
    }
    
    public static boolean isEmpty(String str) {
        return str == null || str.length() == 0;
    }
}

Related

1. join(List list, String separator, boolean ignoreNull)
2. join(List list, String separator)
3. join(List list, String separator)
4. join(List list, String glue)
5. join(List s, String delimiter)
6. implode(List strings, String glue)