突出显示在框架中打开的文本文件的一些单词

我在一个框架中打开一个文件，我想强调一些单词。据我所知，我需要遍历文件的内容。 如何遍历内容以及我可能用于突出显示的相关属性是什么？

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更新：我的代码有点像这样

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private JEditorPane editorpane; JScrollPane editorScrollPane; public TextEditor() { editorpane = new JEditorPane(); editorpane.setEditable(false); if (filename != null) { try { File file = new File(filename); editorpane.setPage(file.toURI().toURL()); } catch (IOException e) { e.printStackTrace(); System.err.println("Attempted to read a bad file ..."); } } else { System.err.println("File name is wrong"); } add(editorpane); } 

Answer 1

要在JEditorPane上突出显示，请查看此示例：

 import java.awt.Color; import javax.swing.JEditorPane; import javax.swing.JFrame; import javax.swing.SwingUtilities; import javax.swing.text.BadLocationException; import javax.swing.text.DefaultHighlighter; import javax.swing.text.Document; import javax.swing.text.Highlighter; import javax.swing.text.JTextComponent; public class Test { // An instance of the subclass of the default highlight painter static MyHighlightPainter myHighlightPainter = new MyHighlightPainter(Color.red); public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JEditorPane jep = new JEditorPane(); jep.setText("Hello to the public"); frame.add(jep); frame.pack(); frame.setVisible(true); highlight(jep, "public");//'public is the word to highligh' } }); } // Creates highlights around all occurrences of pattern in textComp public static 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 while ((pos = text.indexOf(pattern, 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 static 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]); } } } } class MyHighlightPainter extends DefaultHighlighter.DefaultHighlightPainter { public MyHighlightPainter(Color color) { super(color); } }