如何突出显示替换所选单词的单词？

Question

此代码替换为新的像这样的选择的话：

String search = jTextField1.getText(); 
String replaced = jTextPane.getText().replace(search, jTextField2.getText()); 
jTextPane.setText(replaced); 

什么是设置的新词，以黄色背景的最简单的方法？

Answer 1

您可以使用属性：

Simple AttributeSet changed = new SimpleAttributeSet(); 
StyleConstants.setForeground(changed, Color.RED); 
StyleConstants.setBackground(changed, Color.YELLOW); 

// Change attributes on some text 

StyledDocument doc = textPane.getStyledDocument(); 
doc.setCharacterAttributes(20, 4, changed, false); 

查找/替换逻辑检查：Find/Replace, Highlight Words。您将修改突出显示的代码以使用属性。

Answer 2

private void changeAllActionPerformed(java.awt.event.ActionEvent evt) { 
     int j = 0; 
     int i = 0; 
     int index = 0; 
     String search = jTextField1.getText(); 
     String replaced = jTextPane.getText().replace(search, jTextField2.getText()); 
     jTextPane.setText(replaced); 
     String newtext = jTextField2.getText(); 

     try{ 
      if(!jTextField2.getText().isEmpty()){ 
       while(i != -1){ 
         i = jTextPane.getText().indexOf(newtext, j); 
        if(i == -1) 
         break; 
        if(evt.getSource() == changeAll|| evt.getSource() == changeAllButton){ 
         jTextPane.select(i, i + newtext.length()); 
        } 
        Color c = Color.YELLOW; 
        Style s = jTextPane.addStyle("TextBackground", null); 
        StyleConstants.setBackground(s, c); 
        StyledDocument d = jTextPane.getStyledDocument(); 
        d.setCharacterAttributes(jTextPane.getSelectionStart(), jTextPane.getSelectionEnd() - jTextPane.getSelectionStart(), jTextPane.getStyle("TextBackground"), false); 
        j = i + search.length(); 
        index++; 
       } 
       if (index > 0){ 
        jTextPane.grabFocus(); 
        jTextPane.setCaretPosition(jTextPane.getText().indexOf(newtext, 0)); 
       } 
     } catch (Exception e){ 
      jLabel.setText("error"); 
      System.err.print(e); 
}