title: How can I obtain values of key-value pair from a Hashmap?
body: <pre><code>mylogger.info("original request start: "+request.getQueryString());
  System.out.println("Query1:" + request.getQueryString());
  QueryStats queryStats=new QueryStats();
  Map parameterMap = request.getParameterMap()==null? null:new HashMap(request.getParameterMap());
  System.out.println("Query2:" + parameterMap);
  
  Collection newParamsValue=parameterMap.values();
  Object newParams[]=newParamsValue.toArray();
  StringBuffer strParam=new StringBuffer() ;
  int l=newParams.length;
  for(int i=0;i&lt;l;i++){
      **strParam=strParam.append((StringBuffer)newParams[i]);**
  }
  </code></pre>
  
  <p>I want to get all the values into a string. How can I get it?</p>