java-length 、length()、size()的區別

public static void main(String[] args) {
        //length 、length()、size()的區別
        //length屬性 針對數組長度
        String a[]={"zhangsan","lisi","wangwu","zhaoliu"};
        System.out.println(a.length);
        //length()方法 針對字符串
        String b="zhangsanlisiwangwuzhaoliu";
        System.out.println(b.length());
        //size()方法針對泛型集合
        List<String> person=new ArrayList();
        person.add("zhangsan");
        System.out.println(person.size());

    }
運行結果：

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