import javax.imageio.*;
import java.awt.image.*;
import java.awt.event.*;
import java.awt.*;
import java.security.NoSuchAlgorithmException;
import java.security.MessageDigest;
import java.lang.management.*;
import java.lang.ref.*;
import java.lang.reflect.*;
import java.net.*;
import java.io.*;
import javax.swing.table.*;
import javax.swing.text.*;
import javax.swing.event.*;
import javax.swing.*;
import java.util.concurrent.atomic.*;
import java.util.concurrent.*;
import java.util.regex.*;
import java.util.List;
import java.util.zip.*;
import java.util.*;


public class main {
  public static void main(String[] args) throws Exception {
    JFrame jf = new JFrame("Courier New?");
    jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container cp = jf.getContentPane();

    JTextPane pane = new JTextPane();
    
    appendToTextPane(pane, Color.green, "Hello! \n");
    appendToTextPane(pane, Color.blue, "World :)\n");
    
    cp.add(new JScrollPane(pane), BorderLayout.CENTER);

    jf.setSize(400, 300);
    jf.setVisible(true);
  }
  
  static void appendToTextPane(JTextPane pane, Color color, String text) { try {
 
    Document doc = pane.getStyledDocument();
    SimpleAttributeSet set = new SimpleAttributeSet();
    StyleConstants.setFontFamily(set, "Courier New");
    StyleConstants.setBold(set, true);
    StyleConstants.setFontSize(set, 14);
    StyleConstants.setBackground(set, color);
    doc.insertString(doc.getLength(), text, set);
  
} catch (Throwable __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}

  static void set(Object o, String field, Object value) {
    if (o instanceof Class) set((Class) o, field, value);
    else try {
      Field f = set_findField(o.getClass(), field);
      f.setAccessible(true);
      f.set(o, value);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
  
  static void set(Class c, String field, Object value) {
    try {
      Field f = set_findStaticField(c, field);
      f.setAccessible(true);
      f.set(null, value);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
  
  static Field set_findField(Class<?> c, String field) {
    for (Field f : c.getDeclaredFields())
      if (f.getName().equals(field))
        return f;
    throw new RuntimeException("Field '" + field + "' not found in " + c.getName());
  }
  
  static Field set_findStaticField(Class<?> c, String field) {
    for (Field f : c.getDeclaredFields())
      if (f.getName().equals(field) && (f.getModifiers() & Modifier.STATIC) != 0)
        return f;
    throw new RuntimeException("Static field '" + field + "' not found in " + c.getName());
  }
}