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我正在试图制作一个JTextPane,其中包含一种文本编辑器,其中特定的单词或符号具有不同的前景颜色或字体。 到目前为止,我发现改变颜色,以文字的方式,像这样:如何将颜色更改为JTextPane中的特定符号[java]
import javax.swing.*;
import java.awt.*;
import javax.swing.text.*;
public class Test extends JFrame {
private int findLastNonWordChar(String text, int index) {
while (--index >= 0) {
if (String.valueOf(text.charAt(index)).matches("\\W")) {
break;
}
}
return index;
}
private int findFirstNonWordChar(String text, int index) {
while (index < text.length()) {
if (String.valueOf(text.charAt(index)).matches("\\W")) {
break;
}
index++;
}
return index;
}
public Test() {
setDefaultCloseOperation(EXIT_ON_CLOSE);
setSize(400, 400);
setLocationRelativeTo(null);
final StyleContext cont = StyleContext.getDefaultStyleContext();
final AttributeSet attr = cont.addAttribute(cont.getEmptySet(), StyleConstants.Foreground, Color.RED);
final AttributeSet attrBlack = cont.addAttribute(cont.getEmptySet(), StyleConstants.Foreground, Color.BLACK);
DefaultStyledDocument doc = new DefaultStyledDocument() {
private static final long serialVersionUID = 1L;
@Override
public void insertString(int offset, String str, AttributeSet a) throws BadLocationException {
super.insertString(offset, str, a);
String text = getText(0, getLength());
int before = findLastNonWordChar(text, offset);
if (before < 0) {
before = 0;
}
int after = findFirstNonWordChar(text, offset + str.length());
int wordL = before;
int wordR = before;
while (wordR <= after) {
if (wordR == after || String.valueOf(text.charAt(wordR)).matches("\\W")) {
if (text.substring(wordL, wordR).matches("(\\W)*(private|public|protected)")) {
setCharacterAttributes(wordL, wordR - wordL, attr, false);
} else {
setCharacterAttributes(wordL, wordR - wordL, attrBlack, false);
}
wordL = wordR;
}
wordR++;
}
}
};
}
public static void main(String args[]) {
new Test();
}
}
我的问题是,当颜色的符号“ - >”应该改变。事实上,如果我把' - >'而不是'私人'或'公共'不起作用。 你能帮我找到一种方法吗?感谢