This code generate a colored text in JTextPane like this image import javax.swing.*; import javax.swing.text.*; import java.awt.Color; public class ColorPane extends JTextPane { public void appendNaive(Color c, String s) { // naive implementation // bad: instiantiates a new AttributeSet object on each call SimpleAttributeSet aset = new SimpleAttributeSet(); StyleConstants.setForeground(aset, c); int len = getText().length(); setCaretPosition(len); // place caret at the … ...