JAVA for循环的几种写法和效率

    	String[] stringS = {"A","B","C","D"};
    	Collection stringlists = java.util.Arrays.asList(stringS);
    	for(int i = 0;i < stringS.length;i ++){
    		 Log.v("ceshi","传统"+stringS[i]);
    	}
    	for (Iterator itrs = stringlists.iterator();itrs.hasNext();){
    		Object str =   itrs.next();
    		 Log.v("ceshi","迭代器"+str);
    	}
    	for (Object str:stringlists){
    		Log.v("ceshi","java1.5新特性+综合"+str);
    	}
    	//效率最高
        for (String str:stringS){
        	Log.v("ceshi","java1.5新特性"+str);
        }