java - Automatic Resize of jPanel as text is added -



java - Automatic Resize of jPanel as text is added -

i have text game has buttons. when button clicked, text appears. text appears within jpanel, within jscrollpane. jpanel automatically create more vertical space lines of text added. have been doing hand lot more time consuming. there anyway this, or maybe pack jpanel somehow. pretty new if info needed help me out sense free ask. thanks.

i utilize component can automatically -- jtextarea. automatically enlarge more text added.

if need more specific help or code example, please post own little compilable , runnable test illustration program, , can seek modify it.

you state:

i don't want utilize jtextarea because don't want user able highlight or delete of text there in first place.

no problem. create jtextarea non-focusable , non-editable.

i have been using jlabels equal "" , when button pressed, jlabel given new value.

try this:

import java.awt.event.actionevent; import java.awt.event.keyevent; import javax.swing.*; @suppresswarnings("serial") public class addnewlines extends jpanel { private jtextarea textarea = new jtextarea(10, 15); private jbutton addlinebtn = new jbutton(new addlineaction("add line", keyevent.vk_a)); public addnewlines() { textarea.seteditable(false); textarea.setfocusable(false); textarea.setwrapstyleword(true); textarea.setlinewrap(true); textarea.setopaque(false); jscrollpane scrollpane = new jscrollpane(textarea); scrollpane.setverticalscrollbarpolicy(jscrollpane.vertical_scrollbar_always); add(scrollpane); add(addlinebtn); } class addlineaction extends abstractaction { private int count = 0; public addlineaction(string name, int mnemonic) { super(name); putvalue(mnemonic_key, mnemonic); } @override public void actionperformed(actionevent e) { if (count != 0) { textarea.append("\n"); } textarea.append("line of text: " + count); count++; } } private static void createandshowgui() { addnewlines mainpanel = new addnewlines(); jframe frame = new jframe("add new lines"); frame.setdefaultcloseoperation(jframe.dispose_on_close); frame.getcontentpane().add(mainpanel); frame.pack(); frame.setlocationbyplatform(true); frame.setvisible(true); } public static void main(string[] args) { swingutilities.invokelater(new runnable() { public void run() { createandshowgui(); } }); } }

java swing resize jpanel jscrollpane

Comments

Post a Comment

Popular posts from this blog

Delphi change the assembly code of a running process -

Delphi change the assembly code of a running process - i'm trying alter address 00741fa5 has push test.009e721c . alter push test.009e71c8 . procedure callback; asm force $9e71c8 end; procedure tform2.btn1click(sender: tobject); var ppid :dword; pprocess : cardinal; begin getwindowthreadprocessid(findwindow(nil,pchar('test')), @ppid); pprocess := openprocess(process_all_access, false, ppid); injectasm(pprocess, $741fa5, 10, integer(@callback), 0); end; here injectasm function (with error checking) function injectasm(process: longword; injectaddress, injectsize, codeaddress, codesize : integer): pointer; var csize, rsize : integer; replaced : array of byte; jmp : array [0..4] of byte; jmpaddress : integer; nopv : byte; : integer; nbr: ulong_ptr; begin //injectsize must equal or greater 5, because need space our //(far) jmp wwxxyyzz instruction //if there's no space, inject in place of few instructions if injectsize ...
Read more

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) -

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) - hello have problem hibernate , jackson. have 2 pojos @entity @table(name = "users") public class user implements serializable { static final long serialversionuid = 4235637833262722256l; @id @generatedvalue private int id; @column(name = "creation_date") private date creationdate; @column(name = "first_name") private string firstname; @column(name = "last_name") private string lastname; @version @column(name = "version") private int version; @column(name = "e_mail") private string email; @column(name = "enabled") private boolean enabled; @column(name = "login") private string login; @column(name = "password") private string password; @jsonmanagedreference("role") @onetomany(mappedby = "user", cascade = cascadetype.all,fetch = fetchtyp...
Read more

C++ 11 "class" keyword -

C++ 11 "class" keyword - i've started using c++ 11 little bit more , have few questions on special uses of class keyword. know it's used declare class, there's 2 instances have seen don't understand: method<class t>(); and class class_name *var; why precede typename keyword class in first example, , keyword pointer in sec example? that known elaborated type specifier , necessary when class name "shadowed" or "hidden" , need explicit. class t { }; // love of god don't t t; t t2; if compiler smart, give these warnings: main.cpp:15:5: error: must utilize 'class' tag refer type 't' in scope t t2; ^ class main.cpp:14:7: note: class 't' hidden non-type declaration of 't' here t t; ^ if class not defined, deed forwards declaration. for example: template <typename t> void method() { using type = typename t::value_type; } method...
Read more