小编xia*_*alu的帖子

Html代码:

<table>
    <tr>
        <td>The first row</td> <td>The first row</td>
    </tr>
    <tr>
        <td>The second row</td> <td>The second row</td>
    </tr>
    <tr>
        <td>The third row</td> <td>The third row</td>
    </tr>
    <tr>
        <td>The forth row</td> <td>The forth row</td>
    </tr>
</table>
<hr>
<table>
    <tr>
        <td>The first row</td> <td>The first row</td>
    </tr>
    <tr>
        <td>The second row</td> <td>The second row</td>
    </tr>
    <tr>
        <td>The third row</td> <td>The third row</td>
    </tr>
    <tr>
        <td>The forth row</td> <td>The forth row</td>
    </tr>
</table>

jQuery代码:

$(function () {
    $("table:first tr").css("background", "#ffbbbb");   //work
    $("table:last>tr").css("background", "#ffbbbb"); …

我们都知道，关闭我们在代码末尾定义的所有 StreamReader 是一个好习惯。

现在我们可以看到两个 Reader 的定义如下。BufferedReader 和InputStreamReader。BufferedReader 已关闭，但我们无法关闭InputStreamReader。

JAVA代码：

BufferedReader in = new BufferedReader(new InputStreamReader(
    connection.getInputStream()));
if (in != null) {
    in.close();
    }

问题来了，括号里的InputStreamReader是否应该关闭呢？这样的代码会不会给程序带来一些问题呢？请告诉我，谢谢~