java - Setting the font of a JTextArea -

i want create text editor in java. here i've written far:

package com.thundercrust.applications;  import java.awt.borderlayout;  public class texteditor implements actionlistener{  private static string[] fontoptions = {"serif", "agency fb", "arial", "calibri", "cambrian", "century gothic", "comic sans ms", "courier new", "forte", "garamond", "monospaced", "segoe ui", "times new roman", "trebuchet ms", "serif"}; private static string[] sizeoptions = {"8", "10", "12", "14", "16", "18", "20", "22", "24", "26", "28"};  imageicon newicon = new imageicon("res/newicon.png"); imageicon saveicon = new imageicon("res/saveicon.png"); imageicon openicon = new imageicon("res/openicon.png"); imageicon fonticon = new imageicon("res/fonticon.png"); imageicon changefonticon = new imageicon("res/changefonticon.png");  jbutton new = new jbutton(newicon); jbutton save = new jbutton(saveicon); jbutton open = new jbutton(openicon); jbutton changefont = new jbutton(changefonticon);  jlabel fontlabel = new jlabel(fonticon); jlabel fontlabeltext = new jlabel("font: "); jlabel fontsizelabel = new jlabel("size: ");  jcombobox <string> fontname = new jcombobox<>(fontoptions); jcombobox <string> fontsize = new jcombobox<>(sizeoptions);  jtoolbar tool = new jtoolbar();  jtextarea texty = new jtextarea(); jscrollpane scroll = new jscrollpane(texty);  private static final int width = 1366; private static final int height = width / 16 * 9;  private static string name = "text editor";   private static jframe frame = new jframe();  public void display() {     frame.settitle(name);     frame.setsize(width, height);     frame.setdefaultcloseoperation(jframe.exit_on_close);     frame.setlocationrelativeto(null);     frame.setresizable(false);     frame.setvisible(true);      new.addactionlistener(this);     new.settooltiptext("creates new file");     save.addactionlistener(this);     save.settooltiptext("saves current file");     open.addactionlistener(this);     open.settooltiptext("opens file");     changefont.addactionlistener(this);     changefont.settooltiptext("change font");      fontlabel.settooltiptext("font");      fontlabeltext.settooltiptext("set kind of font");     fontsizelabel.settooltiptext("set size of font");      tool.add(new);     tool.addseparator();     tool.add(save);     tool.addseparator();     tool.add(open);     tool.addseparator();     tool.addseparator();     tool.addseparator();     tool.add(fontlabel);     tool.addseparator();     tool.add(fontlabeltext);     tool.add(fontname);     tool.addseparator();     tool.add(fontsizelabel);     tool.add(fontsize);     tool.addseparator();     tool.add(changefont);      jpanel pane = new jpanel();     pane.setlayout(new borderlayout());     pane.add(tool, "north");     pane.add(scroll, "center");     frame.setcontentpane(pane); }  public static void main(string args[]) {     texteditor editor = new texteditor();     editor.display(); }  public void actionperformed(actionevent evt) {     string fontnameset;     string fontsizesettemp;     int fontsizeset;     object source = evt.getsource();     if(source == new) {         texty.settext("");     }     else if(source == changefont) {         fontnameset = (string) fontname.getselecteditem();         fontsizesettemp = (string) fontsize.getselecteditem();         fontsizeset = integer.parseint(fontsizesettemp);         system.out.println(fontnameset + fontsizeset);         scroll.setfont(new font(fontnameset, fontsizeset, font.plain));     }  } } 

my problem setting fonts jtextarea. when click changefont button on actual program, nothing happens. do?

new font(fontnameset, fontsizeset, font.plain) 

this has arguments in wrong order. should be:

new font(fontnameset, font.plain, fontsizeset) 

also, mentioned in comment:

scroll.setfont(new font(fontnameset, fontsizeset, font.plain)); 

should be:

texty.setfont(new font(fontnameset, font.plain, fontsizeset));