Java String Split by Delimiter split(String s, String delimiter)

Description

split

License

Apache License

Declaration

public static String[] split(String s, String delimiter) 

Method Source Code

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

import java.util.ArrayList;
import java.util.Iterator;

public class Main {
    public static String[] split(String s, String delimiter) {
        //Can't use StringTokenizer because it skips blank fields.
        //Can't use it with returnTokens because it screws up multi-char delimiters.
        //All in all, it's a pretty goddamn useless utility
        if (s.endsWith(delimiter)) {
            s += delimiter;/*  w  w w  . j a v a2s .com*/
        }
        ArrayList<String> al = new ArrayList<String>();
        int p1 = 0, p2 = 0;
        String prev = delimiter;
        while ((p2 = s.indexOf(delimiter, p1)) != -1) {
            String fld = s.substring(p1, p2);
            if (fld.equals(delimiter) && prev.equals(delimiter)) {
                al.add("");
            } else if (!fld.equals(delimiter)) {
                al.add(fld);
            }
            prev = fld;
            p1 = p2 + delimiter.length();
        }
        if (p1 != s.length())
            al.add(s.substring(p1));
        //String rtn[] = (String[])al.toArray(new String[0]);
        //Since above line doesn't work with .NET we have to do it this way:
        String rtn[] = new String[al.size()];
        int i = 0;
        Iterator<String> iter = al.iterator();
        while (iter.hasNext()) {
            rtn[i++] = (String) iter.next();
        }
        return rtn;
    }
}

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