Java Array Join join(String[] array)

Description

join

License

Apache License

Declaration

public static String join(String[] array) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.util.Collection;
import java.util.Iterator;
import java.util.List;

public class Main {
    public static String join(String[] array) {
        if (array.length == 0) {
            return "";
        } else {/*from w w  w . j  av  a 2  s.  c o  m*/
            StringBuilder sb = new StringBuilder();
            String[] arr$ = array;
            int len$ = array.length;

            for (int i$ = 0; i$ < len$; ++i$) {
                String s = arr$[i$];
                sb.append(s);
            }

            return sb.toString();
        }
    }

    public static String join(String[] array, char split) {
        if (array.length == 0) {
            return "";
        } else {
            StringBuilder sb = new StringBuilder();

            for (int i = 0; i < array.length; ++i) {
                if (i > 0) {
                    sb.append(split);
                }

                sb.append(array[i]);
            }

            return sb.toString();
        }
    }

    public static String join(String[] array, String split) {
        if (array.length == 0) {
            return "";
        } else {
            StringBuilder sb = new StringBuilder();

            for (int i = 0; i < array.length; ++i) {
                if (i > 0) {
                    sb.append(split);
                }

                sb.append(array[i]);
            }

            return sb.toString();
        }
    }

    public static String join(List<String> list, String separator,
            String quot, String defaultValue) {
        StringBuffer sb = new StringBuffer();
        if (list == null || list.size() == 0) {
            return defaultValue;
        } else {
            for (String value : list) {
                if (sb.length() > 0 && separator != null) {
                    sb.append(separator);
                }
                if (quot != null) {
                    sb.append(quot);
                }
                sb.append(value);
                if (quot != null) {
                    sb.append(quot);
                }
            }
            return sb.toString();
        }
    }

    public static String join(Collection<String> coll, String split) {
        if (coll.isEmpty()) {
            return "";
        } else {
            StringBuilder sb = new StringBuilder();
            boolean isFirst = true;

            String s;
            for (Iterator i$ = coll.iterator(); i$.hasNext(); sb.append(s)) {
                s = (String) i$.next();
                if (isFirst) {
                    isFirst = false;
                } else {
                    sb.append(split);
                }
            }

            return sb.toString();
        }
    }

    public static String toString(String[] strArray, String separator) {
        String strResult = "";
        if (strArray == null || separator == null) {
            strResult = null;
        } else {
            StringBuffer strBuffer = new StringBuffer();
            for (int i = 0; i < strArray.length; i++) {
                if (strArray[i] == null || strArray[i].length() == 0)
                    continue;
                strBuffer.append(separator);
                strBuffer.append(strArray[i]);
            }
            if (strBuffer.length() > 0) {
                strBuffer.delete(0, separator.length());
            }
            strResult = strBuffer.toString();
        }
        return strResult;
    }

    public static boolean isEmpty(String str) {
        return str == null || str.length() == 0;
    }
}

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