zoukankan      html  css  js  c++  java
  • IDEA代码里的黄色提示

    #cec726

    提示:String concatenation as argument to 'StringBuilder.append()' 

    详细提示

    String concatenation as argument to 'StringBuilder.append()' call less... (Ctrl+F1)
    Inspection info: Reports String concatenation used as the argument to StringBuffer.append(), StringBuilder.append() or Appendable.append(). Such calls may profitably be turned into chained append calls on the existing StringBuffer/Builder/Appendable, saving the cost of an extra StringBuffer/Builder allocation.
    This inspection ignores compile time evaluated String concatenations, which when converted to chained append calls would only worsen performance.

    解释

    append方法就是为了解决String += String的效率问题的,而上面代码在append方法里使用了字符串连接,可能降低性能。解决提示:不要在append方法里写字符串连接代码。

    C-style array declaration of local variable 'arr' less... 

    详细提示

    C-style array declaration of local variable 'arr' less... (Ctrl+F1)
    Inspection info: Reports array declarations made using C-style syntax, with the array indicator brackets positioned after the variable name or after the method parameter list. For example:
    public String process(String value[])[] {
    return value;
    }
    Most code styles prefer Java-style array declarations, with the array indicator brackets attached to the type name.

    解释

    数组对象,把中括号放在变量后面是C语言的风格,而Java习惯放在变量类型后面

    'for' loop replaceable with 'foreach' less... 

    详细提示

    'for' loop replaceable with 'foreach' less... (Ctrl+F1)
    Inspection info: Reports for loops which iterate over collections or arrays, and can be replaced with the foreach iteration syntax, available in Java 5 and newer.

    解释

    循环遍历集合或数组,可以替换为foreach迭代语法

    Local variable 's' is redundant less...

    详细提示

    Local variable 's' is redundant less... (Ctrl+F1)
    Inspection info: Reports unnecessary local variables, which add nothing to the comprehensibility of a method. Variables caught include local variables which are immediately returned, local variables that are immediately assigned to another variable and then not used, and local variables which always have the same value as another local variable or parameter.

    解释

    定义的变量名称是冗余的

    Field injection is not recommended less...

    详细提示

    Field injection is not recommended less... (Ctrl+F1)
    Inspection info: Spring Team recommends: "Always use constructor based dependency injection in your beans. Always use assertions for mandatory dependencies".

    解释

    Spring团队建议:“始终在bean中使用基于构造函数的依赖注入

    Found duplicate code

    鼠标放在重复代码块,Alt+Enter

    查看其它重复代码,可以做比较

  • 相关阅读:
    Linux下安装nginx
    MySQL基础
    win10 安装MySQL 5.7.27
    Java IO之File
    java并发编程之ThreadLocal
    原生JS 的60秒倒计时!
    vueX 配合路由导航配置动态路由
    JS获取 当前时间是本年的第几天? 第几周?
    vue书写echarts 100px大小问题
    VUE 父组件与子组件双向数据绑定的方法 做弹框绑定列表页数据的举例
  • 原文地址:https://www.cnblogs.com/LUA123/p/13267466.html
Copyright © 2011-2022 走看看