java - 为什么我的 JTextarea 无法正确换行？

Question

我对我的 JTextArea 感到非常惊讶。正在关注JTextArea JAVAdoc我尝试创建一个长字符串的 JTextArea，并希望自动换行。

JTextArea text = new JTextArea(myLongString,10,100);
text.setLineWrap(true);
text.setWrapStyleWord(true);
myContainer.add(text);

但事实上我的文本超出了我的框架，并且每行的字符数约为 180。 也许我不明白某些事情或者问题出在布局管理中。但为了避免布局复杂化，我将其简化为基本框架>面板>文本区域。

请注意，英语不是我的母语。

public class myTest extends JFrame
{

    public myTest()
    {
        JPanel simplePanel = new JPanel();
        String alongString = "Accusata consulatu vix ad, eruditi albucius liberavisse est no. Platonem reprehendunt qui ea. Dicta recteque referrentur an his, id facete maiorum vulputate vim. At suas oratio mnesarchum quo. Quidam omnium necessitatibus ex sea, vix soleat quaerendum conclusionemque ut, case malorum nam an.No quis suas discere nam, nam ex nostro fastidii vivendum. Sed cu nobis ullamcorper. Has at doctus ponderum honestatis. In facer dicam corpora vis.";
        JTextArea myText = new JTextArea(alongString,10,100 );

        this.setSize(800, 600);

        myText.setLineWrap(true);
        myText.setWrapStyleWord(true);

        simplePanel.add(myText);
        this.add(simplePanel);
        this.validate();
        this.setVisible(true);

    }

    public static void main(String[] args)
    {
        new myTest();
    }
}

Answer 1

问题是您的 jtext 区域位于具有默认布局管理器的面板中。你需要改变它别的东西。查看下面修改后的代码并告诉我它是否适合您。

public MyTest()
{


    String alongString = "Accusata consulatu vix ad, eruditi albucius liberavisse est no. Platonem reprehendunt qui ea. Dicta recteque referrentur an his, id facete maiorum vulputate vim. At suas oratio mnesarchum quo. Quidam omnium necessitatibus ex sea, vix soleat quaerendum conclusionemque ut, case malorum nam an.No quis suas discere nam, nam ex nostro fastidii vivendum. Sed cu nobis ullamcorper. Has at doctus ponderum honestatis. In facer dicam corpora vis.";
    JTextArea myText = new JTextArea(alongString,10,100 );

    myText.setLineWrap(true);
    myText.setWrapStyleWord(true);

    JPanel simplePanel = new JPanel(new BorderLayout(5, 5));
    simplePanel.add(myText, BorderLayout.CENTER);

    this.add(simplePanel);
    this.validate();
    this.setSize(800, 600);
    this.setVisible(true);

}

public static final void main(String ... args) {
    new MyTest();
}