Question

我可以从值开始将一些文本突出显示为JTextPane，并从另一个值开始喜欢以下但是有黄色？

“” JTextPane 突出显示文字“”

感谢。

Answer 1

通常有几种可能性，取决于“亮点”的真正含义： - ）

通过更改文档级别上任意文本部分的任何样式属性来突出显示，如

    SimpleAttributeSet sas = new SimpleAttributeSet();
    StyleConstants.setForeground(sas, Color.YELLOW);
    doc.setCharacterAttributes(start, length, sas, false);

在textPane级别通过荧光笔突出显示：

    DefaultHighlighter.DefaultHighlightPainter highlightPainter = 
        new DefaultHighlighter.DefaultHighlightPainter(Color.YELLOW);
    textPane.getHighlighter().addHighlight(startPos, endPos, 
            highlightPainter);

Answer 2

https://web.archive.org/web/20120530071821/http://www.exampledepot.com/egs/javax.swing.text/style_HiliteWords.html

JTextArea textComp = new JTextArea();

// Highlight the occurrences of the word "public"
highlight(textComp, "public");

// Creates highlights around all occurrences of pattern in textComp
public void highlight(JTextComponent textComp, String pattern)
{
    // First remove all old highlights
    removeHighlights(textComp);

    try
    {
        Highlighter hilite = textComp.getHighlighter();
        Document doc = textComp.getDocument();
        String text = doc.getText(0, doc.getLength());
        int pos = 0;

        // Search for pattern
        // see I have updated now its not case sensitive 
        while ((pos = text.toUpperCase().indexOf(pattern.toUpperCase(), pos)) >= 0)
        {
            // Create highlighter using private painter and apply around pattern
            hilite.addHighlight(pos, pos+pattern.length(), myHighlightPainter);
            pos += pattern.length();
        }
    } catch (BadLocationException e) {
    }
}

// Removes only our private highlights
public void removeHighlights(JTextComponent textComp)
{
    Highlighter hilite = textComp.getHighlighter();
    Highlighter.Highlight[] hilites = hilite.getHighlights();
    for (int i=0; i<hilites.length; i++)
    {
        if (hilites[i].getPainter() instanceof MyHighlightPainter)
        {
            hilite.removeHighlight(hilites[i]);
        }
    }
}

// An instance of the private subclass of the default highlight painter
Highlighter.HighlightPainter myHighlightPainter = new MyHighlightPainter(Color.red);

// A private subclass of the default highlight painter
class MyHighlightPainter extends DefaultHighlighter.DefaultHighlightPainter
{
    public MyHighlightPainter(Color color)
    {
        super(color);
    }
}

Answer 3

是的，您可以通过 JTextPane 中的 setSelectionStart 和 setSelectionEnd 来继承自 JTextPane 。

见 javadoc of JTextComponent.setSelectionStart

Answer 4

您是否尝试过java的字符串比较方法

.equalsIgnoreCase("Search Target Text")

因为此方法允许搜索而不必考虑字符串的大小写这可能是您想要实现目标的门票

希望这可以帮助你Makky

Answer 5

性能方面，最好将toUpperCase置于

String text = doc.getText（0，doc.getLength（））;

而不是在while循环中

但是感谢这个好榜样。

JTextPane突出显示文本

5 个答案: