Java Learning Diary---------------------------------operations on JFrame

Set a background picture, add music, monitor the keyboard, change font style, and more!

ImportJava.applet.Applet;ImportJava.applet.AudioClip;Importjava.awt.*;Importjava.awt.event.*;ImportJava.io.File;Importjava.net.MalformedURLException;ImportJava.net.URL;Importjavax.sound.sampled.*;Importjavax.swing.*; Public classPassword_lockextendsJFrameImplementsactionlistener{PrivateJLabel Label1,label2; PrivateJTextField Text_login; PrivateJPasswordField Text_password; PrivateJButton button_login,button_exit,button_q; PrivateJPanel Panel; //private image image = null;    PrivateImageIcon imageicon=NewImageIcon ("D:/java/eclipse/christmas_eve/kulou.jpg"); PrivateJLabel label_background=NewJLabel (ImageIcon);  PublicPassword_lock () {Super("Password Lock");  This. setlocation (0,0);  This. SetSize (Imageicon.geticonwidth (), Imageicon.geticonheight ());  This. setundecorated (true);//go to Windows retouching               /*This.addkeylistener (New Keyadapter () {//panel not recognized, KeyListener needs focus, if you press a button or something * (which usually gives the button the focus), his parent component (such as the PA Nel) cannot capture keyboard events public void keypressed (KeyEvent e) {if (E.getkeycode () ==keyevent.vk_es            CAPE) system.exit (0); }        });*/init (); }         Public voidinit () {Panel=NewJPanel ();  This. Add (Panel, "Center"); //this.setlayout (null);Panel.setlayout (NULL); Label1=NewJLabel ("User name:"); Label1.setbounds (NewRectangle (580,455,90,50)); Label1.setfont (NewFont ("Arial", font.bold,16));        Label1.setforeground (Color.green);                Panel.add (Label1); Text_login=NewJTextField ("Computer 131"); Text_login.seteditable (false); Text_login.setfont (NewFont ("Arial", font.bold,16));        Text_login.setforeground (color.red); Text_login.setbounds (NewRectangle (650,465,110,30));                Panel.add (Text_login); Label2=NewJLabel ("Password:"); Label2.setbounds (NewRectangle (580,495,90,60)); Label2.setfont (NewFont ("Arial", font.bold,16));        Label2.setforeground (Color.green);                Panel.add (Label2); Text_password=NewJPasswordField (); Text_password.setfont (NewFont ("Arial", font.bold,30)); Text_password.setbounds (NewRectangle (650,510,110,30));                Panel.add (Text_password); Button_login=NewJButton ("OK"); Button_login.setbounds (NewRectangle (570,565,90,30)); Button_login.setfont (NewFont ("Arial", font.bold,16));        Button_login.setforeground (color.red); Button_login.addactionlistener ( This); //This.addkeylistener (this);Panel.add (Button_login); Button_exit=NewJButton ("Reset"); Button_exit.setbounds (NewRectangle (695,565,90,30)); Button_exit.setfont (NewFont ("Arial", font.bold,16));        Panel.add (Button_exit); Button_exit.addactionlistener ( This); Button_q=NewJButton ("Exit"); Button_q.setbounds (NewRectangle (0,0,2,5));        Button_q.setbackground (Color.Black);        Panel.add (BUTTON_Q); Button_q.addactionlistener ( This); Toolkit.getdefaulttoolkit (). Addawteventlistener (NewAwteventlistener () {//I'll go, I'm going to have to, add a keyboard. Global Monitoring             Public voideventdispatched (awtevent e) {if(((KeyEvent) e). Getkeychar () = =Keyevent.vk_escape) {System.exit (0); }                if(((KeyEvent) e). Getkeychar () = =keyevent.vk_enter)                {test ();                }}},awtevent.key_event_mask); Label_background.setbounds (NewRectangle (0,0, Imageicon.geticonwidth (), Imageicon.geticonheight ())); //This.getlayeredpane (). Add (label_background);                 This. Getlayeredpane (). Add (Label_background,NewInteger (Integer.min_value));//Add to Getlayeredpane layer of JFrame((JPanel) This. Getcontentpane ()). Setopaque (false);//TransparentPanel.setopaque (false);  This. setvisible (true); }     Public voidactionperformed (ActionEvent e) {//TODO auto-generated Method Stub            if(E.getsource () = =Button_login)    {test (); }    Else if(E.getsource () = =button_q) {System.exit (0); }    Else if(E.getsource () = =button_exit) {Text_password.settext (NULL); }    } Public voidTest () {if(Text_password.gettext (). Equals ("6472")){         This. setvisible (false); NewNewframe (); }    Else{Text_password.settext (NULL); Joptionpane.showmessagedialog ( This, "Password entered incorrectly, please re-enter"); }    } classNewframeextendsJFrameImplementsactionlistener{PrivateImageIcon imageicon1=NewImageIcon ("d:/java/eclipse/christmas_eve/Christmas Eve. jpg"); PrivateJLabel label_background1=NewJLabel (Imageicon1); PrivateJPanel panel_1=NewJPanel (); PrivateJButton button_q=NewJButton ("Exit");  PublicNewframe () {Super("You won!" ");  This. SetBounds (0, 0, Imageicon1.geticonwidth (), Imageicon1.geticonheight ());  This. setundecorated (true); Panel_1.setlayout (NULL);  This. Getcontentpane (). Add (Panel_1); Button_q.setbounds (NewRectangle (0,0,2,5));        Button_q.setbackground (Color.Blue);        Panel_1.add (BUTTON_Q); Button_q.addactionlistener ( This); Playmusic ();//                    //This.getcontentpane (). Add (label_background1);Label_background1.setbounds (NewRectangle (0,0, Imageicon.geticonwidth (), Imageicon.geticonheight ()));  This. Getlayeredpane (). Add (Label_background1,NewInteger (Integer.min_value));//Add to Getlayeredpane layer of JFrame((JPanel) This. Getcontentpane ()). Setopaque (false);//TransparentPanel_1.setopaque (false);  This. setvisible (true); } @Override Public voidactionperformed (ActionEvent e) {//TODO auto-generated Method Stub        if(E.getsource () = =button_q) {System.exit (0); }    }} Public voidPlaymusic () {URL CB=NULL; File F=NewFile ("C:\\users\\xiehe\\music\\wav\\12.wav");//inside the quotes is the absolute deer tendon where the music files are located.        Try{CB=F.tourl (); } Catch(malformedurlexception e) {//TODO auto-generated Catch blockE.printstacktrace ();         } AudioClip AAU; AAU=Applet.newaudioclip (CB); //Aau.play ();Aau.loop (); //Loop play Aau.play () Single aau.stop () Stop playback} Public Static voidMain (string[] args) {NewPassword_lock (); }}

Java Learning Diary---------------------------------operations on JFrame