e970. modifying text in a jtextcomponent.txt

这里面包含了一百多个JAVA源文件

// Create the text component
    JTextComponent textComp = new JTextField("Initial Text");
    Document doc = textComp.getDocument();
    
    try {
        // Insert some text at the beginning
        int pos = 0;
        doc.insertString(pos, "some text", null);
    
        // Insert some text after the 5th character
        pos = 5;
        doc.insertString(pos, "some text", null);
    
        // Append some text
        doc.insertString(doc.getLength(), "some text", null);
    
        // Delete the first 5 characters
        pos = 0;
        int len = 5;
        doc.remove(pos, len);
    
        // Replace the first 3 characters with some text
        pos = 0;
        len = 3;
        doc.remove(pos, len);
        doc.insertString(pos, "new text", null);
    } catch (BadLocationException e) {
    }