import javax.swing.*;
import javax.swing.text.*;
import java.awt.event.*;
import java.awt.*;

public class JTextPane1{
private JTextPane textPane;

public JTextPane1(){
  textPane=new JTextPane();
  textPane.setBackground(Color.black);
  textPane.setEditable(false); 
}
public void setYellow_Bold_20(String str){
  SimpleAttributeSet attrset=new SimpleAttributeSet();
  StyleConstants.setForeground(attrset,Color.yellow);
  StyleConstants.setBold(attrset,true);
  insert(str,attrset); 
}
public void setBlue_Italic_Bold_22(String str){
  SimpleAttributeSet attrset=new SimpleAttributeSet();
  StyleConstants.setForeground(attrset,Color.blue);
  StyleConstants.setItalic(attrset,true);
  StyleConstants.setFontSize(attrset,24);
  insert(str,attrset); 
}
public void setRed_UnderLine_Italic_24(String str){
  SimpleAttributeSet attrset=new SimpleAttributeSet();
  StyleConstants.setForeground(attrset,Color.red);
  StyleConstants.setUnderline(attrset,true);
  StyleConstants.setItalic(attrset,true);
  StyleConstants.setFontSize(attrset,24);
  insert(str,attrset); 
}
   //這個方法最主要的用途是將字符串插入到JTextPane中。
public void insert(String str,AttributeSet attrset){
  Document docs=textPane.getDocument();//利用getDocument()方法取得JTextPane的Document instance.0
  str=str+"\n";
  try{
    docs.insertString(docs.getLength(),str,attrset);     
  }catch(BadLocationException ble){
     System.out.println("BadLocationException:"+ble); 
  } 
}
public Component getComponent(){
  return textPane; 
}
public static void main(String[] args){
  JTextPane1 pane=new JTextPane1();
  pane.setYellow_Bold_20("This is Line 1,yellow,Bold,Size 20");
  pane.setBlue_Italic_Bold_22("This is Line 2,blue,Italic,Bold,Size 22");
  pane.setRed_UnderLine_Italic_24("This is Line 3,red,UnderLine,Italic,Size 24");
  
  JFrame f=new JFrame("JTextPane1");
  f.getContentPane().add(pane.getComponent());
  f.setSize(450,180);
          f.show();
          f.addWindowListener(new WindowAdapter(){
          public void windowClosing(WindowEvent e){
            System.exit(0); 
          }
          });
}
}