Java Comma Separated List commaDelimitedListToStringArray(String str)

Description

comma Delimited List To String Array

License

Apache License

Declaration

public static String[] commaDelimitedListToStringArray(String str) 

Method Source Code

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

import java.util.ArrayList;

import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;

import java.util.List;

public class Main {
    public static String[] commaDelimitedListToStringArray(String str) {
        return delimitedListToStringArray(str, ",");
    }//from  w  w w . j av  a2s  .co  m

    public static String[] delimitedListToStringArray(String str, String delimiter) {
        return delimitedListToStringArray(str, delimiter, null);
    }

    public static String[] delimitedListToStringArray(String str, String delimiter, String charsToDelete) {
        if (str == null) {
            return new String[0];
        }
        if (delimiter == null) {
            return new String[] { str };
        }
        List<String> result = new ArrayList<String>();
        if ("".equals(delimiter)) {
            for (int i = 0; i < str.length(); i++) {
                result.add(deleteAny(str.substring(i, i + 1), charsToDelete));
            }
        } else {
            int pos = 0;
            int delPos;
            while ((delPos = str.indexOf(delimiter, pos)) != -1) {
                result.add(deleteAny(str.substring(pos, delPos), charsToDelete));
                pos = delPos + delimiter.length();
            }
            if (str.length() > 0 && pos <= str.length()) {
                // Add rest of String, but not in case of empty input.
                result.add(deleteAny(str.substring(pos), charsToDelete));
            }
        }
        return toStringArray(result);
    }

    public static String deleteAny(String inString, String charsToDelete) {
        if (!hasLength(inString) || !hasLength(charsToDelete)) {
            return inString;
        }
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < inString.length(); i++) {
            char c = inString.charAt(i);
            if (charsToDelete.indexOf(c) == -1) {
                sb.append(c);
            }
        }
        return sb.toString();
    }

    public static String[] toStringArray(Collection<String> collection) {
        if (collection == null) {
            return null;
        }
        return collection.toArray(new String[collection.size()]);
    }

    public static String[] toStringArray(Enumeration<String> enumeration) {
        if (enumeration == null) {
            return null;
        }
        List<String> list = Collections.list(enumeration);
        return list.toArray(new String[list.size()]);
    }

    public static boolean hasLength(CharSequence str) {
        return (str != null && str.length() > 0);
    }

    public static boolean hasLength(String str) {
        return hasLength((CharSequence) str);
    }
}

Related

1. addItemFromCommaStrings(final List list, final String commaStrings)
2. addJvmArgumentsAndOptions(final List commandLine, final String[] jvmArgsOpts)
3. addMultiLine(String multiLine, List commandsList)
4. addPropertyToCommand(List command, String key, String value)
5. commaDelimitedListToStringArray(final String str)
6. commaDelimitedListToStringArray(String str)
7. commaDelimitedListToStringArray(String str)
8. commaDelimitedListToStringArray(String str)
9. commaDelimitedStringToList(String str)