小编Jos*_*han的帖子

当鼠标在该文本字段中单击时,我需要使该程序清除文本字段中的文本.我尝试了一些东西,但没有一个还没有为我工作.

以下是完整的代码:

public class TimerClassPanel extends JFrame implements MouseListener{

    public TimerClassPanel(){
        setTitle("Timer Class");
        setSize(WIDTH, HEIGHT);

        timer = new Timer(DELAY, new TimerEventHandler());

        pane = getContentPane();
        pane.setLayout(null);

        int r = (int)(9.0 * Math.random()) + 1;
        String str2 = Integer.toString(r);

        label = new JLabel(str2, SwingConstants.CENTER);
        label.setSize(150,30);
        label.setLocation(0,0);

        textField = new JTextField();
        textField.setSize(150,30);
        textField.setLocation(150,0);

        startB = new JButton("Start");
        startbh = new StartButtonHandler();
        startB.addActionListener(startbh);
        startB.setSize(100,30);
        startB.setLocation(0,30);

        stopB = new JButton("Stop");
        stopbh = new StopButtonHandler();
        stopB.addActionListener(stopbh);
        stopB.setSize(100,30);
        stopB.setLocation(100,30);

        exitB = new JButton("Exit");
        ebHandler = new ExitButtonHandler(); …

我正在研究一个C++程序,我需要初始化一个指针向量.我知道如何初始化一个向量,但是如果有人能告诉我如何将它初始化为一个充满指针的向量,那就太好了!

我正在用HTML编写一个网页,我试图弄清楚如何将搜索栏对齐到导航栏的右侧.下面是我用于导航栏的HTML,以及CSS代码.

HTML:

<div class="naviagion">
        <div class="col-md-10 col-md-offset-1" id="test">
            <ul class="nav nav-pills">
                <li class="page-title"><a href="index.html"><h4>Josh's Blog</h4></a></li>
                <li class="active"><a href="index.html">Home</a></li>
                <li class="menu-item"><a href="source/posts.html">Blog Posts</a></li>
                <li class="menu-item"><a href="source/projects.html">Projects</a></li>
                <li class="menu-item"><a href="source/about.html">About</a></li>
                <li class="menu-item"><a href="source/contact.html">Contact</a></li>
                <!-- Search Bar -->
                <li id="search-bar" align="right">
                    <form class="navbar-form navbar-left" role="search">
                        <div class="form-group">
                            <input type="text" class="form-control" placeholder="Search">
                        </div>
                    <button type="submit" class="btn btn-default"><span class="glyphicon glyphicon-search"></span></button>
                    </form>
                </li>


            </ul><br>
        </div>
    </div>

CSS:

    #search-bar {
    margin-top: 19px;
}

.page-title {
    padding-right: 50px;
    margin-top: 17px;
}

.menu-item {
    margin-top: 25px;
}

#test { …