Swing's settings for font color in Jtextpane

Import Java.awt.BorderLayout;


import Java.awt.Color;


import java.awt.event.ActionEvent;


import Java.awt.event.ActionListener;


import Javax.swing.JButton;


import Javax.swing.JEditorPane;


import Javax.swing.JPanel;


import Javax.swing.JScrollPane;


import Javax.swing.JTextPane;


import Javax.swing.UIManager;


import javax.swing.WindowConstants;


import Javax.swing.text.AttributeSet;


import javax.swing.text.DefaultStyledDocument;


import javax.swing.text.Document;


import Javax.swing.text.EditorKit;


import Javax.swing.text.MutableAttributeSet;


import Javax.swing.text.SimpleAttributeSet;


import javax.swing.text.StyleConstants;


import javax.swing.text.StyledDocument;


Import Javax.swing.text.StyledEditorKit;


public class Newjframe extends Javax.swing.JFrame implements ActionListener {


private JPanel Jp1;


private JButton color;


private Jtextpane Jep;


private JScrollPane JSP;


private JButton font;


/**


* auto-generated Main method to display this JFrame


　 */


public static void Main (string[] args) {


Newjframe Inst = new Newjframe ();


inst.setvisible (TRUE);


}


public Newjframe () {


super ();


Initgui ();


}


private void Initgui () {


try {


borderlayout thislayout = new BorderLayout ();


Getcontentpane (). setlayout (Thislayout);


setdefaultcloseoperation (windowconstants.dispose_on_close);


{


jp1 = new JPanel ();


Getcontentpane (). Add (Jp1, Borderlayout.north);


　　 {


font = new JButton ();


Font.addactionlistener (this);


jp1.add (font);


font.settext ("Font");


　　 }


　　 {


color = new JButton ();


jp1.add (color);


Color.addactionlistener (this);


color.settext ("color");


　　 }


　 }


　 {


jsp = new JScrollPane ();


Getcontentpane (). Add (JSP, Borderlayout.center);


　　 {


Jep = new Jtextpane ();


Jsp.setviewportview (Jep);


jep.setdocument (New Defaultstyleddocument ());


　　 }


　 }


pack ();


setSize (400, 300);


} catch (Exception e) {


E.printstacktrace ();


　 }


}


public static void Setfontsize (JEditorPane editor, int size) {


if (editor!= null) {


if (Size > 0) && (Size < 512)) {


MutableAttributeSet attr = new SimpleAttributeSet ();


styleconstants.setfontsize (attr, size);


setcharacterattributes (editor, attr, false);


} else {


Uimanager.getlookandfeel (). Provideerrorfeedback (editor);


　 }


　 }


}


public static void Setforeground (JEditorPane editor, Color FG) {


if (editor!= null) {


if (FG!= null) {


MutableAttributeSet attr = new SimpleAttributeSet ();


Styleconstants.setforeground (attr, FG);


setcharacterattributes (editor, attr, false);


} else {


Uimanager.getlookandfeel (). Provideerrorfeedback (editor);


　 }


　 }


}


public static final void Setcharacterattributes (JEditorPane editor,


AttributeSet attr, Boolean replace) {


int p0 = Editor.getselectionstart ();


int p1 = Editor.getselectionend ();


if (P0!= p1) {


styleddocument doc = getstyleddocument (editor);


doc.setcharacterattributes (P0, P1-p0, attr, replace);


　 }


Stylededitorkit k = getstylededitorkit (editor);


MutableAttributeSet inputattributes = K.getinputattributes ();


if (replace) {


inputattributes.removeattributes (inputattributes);


　 }


inputattributes.addattributes (attr);


}


protected static final Styleddocument getstyleddocument (JEditorPane e) {


Document d = e.getdocument ();


if (d instanceof styleddocument) {


return (styleddocument) D;


　 }


throw new IllegalArgumentException ("Document must be Styleddocument");


}


protected static final Stylededitorkit Getstylededitorkit (JEditorPane e) {


Editorkit k = E.geteditorkit ();


if (k instanceof Stylededitorkit) {


return (Stylededitorkit) K;


　 }


throw new IllegalArgumentException ("Editorkit must be Stylededitorkit");


}


public void actionperformed (ActionEvent e) {


Object obj = E.getsource ();


if (obj = = font) {


JEditorPane editor = Jep;


setfontsize (editor, 20);


　 }


if (obj = = color) {


JEditorPane editor = Jep;


Setforeground (editor, color.red);


　 }


}


}