搜索一个字符串中任意两个字符之间的内容

import java.util.ArrayList;
/**
* @author liuc
*搜索一个字符串中任意中的任意两个字符之间的内容
*可是搜索小中大括号里面的内容以及任意指定的两个字符之间的内容
*/
public class BracketsAnalysis {
static ArrayList<String> al=new ArrayList<String>();


public static void main(String[] args) {
String[] res=analyBracket("111[1232334]ewerqwer[e34455]ferfaq[eqrewfrqw]1111","[","]");
for (int i = 0; i < res.length; i++) {
System.out.println(res[i]);
}

}
public static String[] analyBracket(String sourcestr,String dlimStart,String dlimEnd){

if(sourcestr.indexOf(dlimStart)!=-1) {
int indexLeft=sourcestr.indexOf(dlimStart);
int indexRight=sourcestr.indexOf(dlimEnd);
if (indexLeft<indexRight) {
al.add(sourcestr.substring(indexLeft+1,indexRight));
String substr=sourcestr.substring(indexRight+1, sourcestr.length());
if (substr!=null||!"".equals(sourcestr)) {
analyBracket(substr, dlimStart,dlimEnd);
}
}
}
String res[]=new String[al.size()];
for (int i = 0; i < res.length; i++) {
res[i]=al.get(i);
}
return res;
}
}