java - Getting Input from JTextArea -

public static void main(string[] args) throws printerexception {      toolkit tk = toolkit.getdefaulttoolkit();     int xsize = ((int) tk.getscreensize().getwidth());     int ysize = ((int) tk.getscreensize().getheight());     final string password = "alphabet";      jframe screen = new jframe("insert title here");      screen.setsize(xsize, ysize);     screen.setdefaultcloseoperation(jframe.exit_on_close);     screen.setresizable(false);      screen.setvisible(true);      final jwindow window = new jwindow(screen);     window.setsize(xsize, ysize);     window.setname("insert title here");      final jtextarea text = new jtextarea();     text.settext("type password > ");     text.setbackground(color.black);     text.setforeground(color.green);        window.add(text);     window.setvisible(true);      text.addkeylistener(new java.awt.event.keyadapter(){         public void keyreleased(java.awt.event.keyevent evt) {             system.out.println(evt.getkeycode());              if(evt.getkeycode() == 51){                 system.out.println(text.gettext());                 string passattempt = text.gettext();                 int start = passattempt.indexof('>') + 2 ;                 int end = passattempt.indexof('#');                 passattempt = passattempt.substring(start, end);                 if(passattempt.equals(password)) {                     system.out.println("successful");                     text.settext("login successful");                     window.add(text);                     window.setvisible(true);                     }                 if(!passattempt.equals(password)) {                     system.out.println(passattempt);                     text.settext("incorrect");                     window.add(text);                     window.setvisible(true);                                         }                  }     }      }); } 

i'm trying create fallout-esque user interface, , need user input type in 'password' before open ui, can't figure out how read input jtextarea, please help!

note: main goal here keep feel of using old school dos program, can't use joptionpane or that.

edit: everybody, ended going keylistener, , worked perfectly!

since use jtextarea instead of jpasswordfield, have filter out password content of text jtextarea. idea have far make condition capture password after type password > sentences.

then, save original password somewhere in arraylist , masking original password else *** , replace original password content on jtextarea masked password. maybe not perfect solution question, believe answer can @ least.

public class test { private static string password; private static list<string> passwordlist;  public static void main(string[] args) throws printerexception {      keyevents ke = new keyevents();     toolkit tk = toolkit.getdefaulttoolkit();     int xsize = ((int) tk.getscreensize().getwidth());     int ysize = ((int) tk.getscreensize().getheight());      jframe screen = new jframe("insert title here");      screen.setsize(xsize, ysize);     screen.setdefaultcloseoperation(jframe.do_nothing_on_close);     screen.setresizable(false);      screen.setvisible(true);      jwindow window = new jwindow(screen);     window.setsize(xsize, ysize);     window.setname("insert title here");      final jtextarea text = new jtextarea();     text.settext("type password > ");     text.setbackground(color.black);     text.setforeground(color.green);      passwordlist = new arraylist<string>();      text.addkeylistener(new java.awt.event.keyadapter() {         public void keyreleased(java.awt.event.keyevent evt) {             string[] content = text.gettext().split("\n");             string newcontent = "";              (int = 0; < content.length; i++) {                 if (content[i].contains("type password > ")) {                     password = content[i].replace("type password > ", "");                      if(password.length() > 0){                         passwordlist.add(password.substring(password.length() - 1));                     }                      content[i] = "type password > " + passwordmasked(password);                   }                  newcontent += content[i];             }              if (evt.getkeycode() == 10) {                 newcontent += "\nyour password " + arrays.tostring(passwordlist.toarray());             }              text.settext(newcontent);         }     });      window.add(text);     window.setvisible(true);  }  public static string passwordmasked(string password) {     string value = password;     password = "";     (char c : value.tochararray()) {         password += "*";     }      return password; }