a simple java program to parse query string

ParseQueryString.java

public class ParseQueryString {
  public static void main(String[] args) {
    String queryString = "foo=a&bar=b";
    for(String pair : queryString.split("&")) {
      int index = pair.indexOf('=');
      // -1 means not found
      // 0 means at beginnging, e.g '=a'
      if(index <=0) {
          continue;
      }
      String key = pair.substring(0, index);
      String value = pair.substring(index + 1);
      System.out.println(key + " => " + value);
    }
  }
}