SetBounds method, with setlayout (null)

Reproduced from: http://blog.csdn.net/taoweiji2008/article/details/8585306

First, the layout of the relevant container is set to setlayout (null);

Then call the component's SetBounds () method

Set the position of the button to (100,100) long width, respectively, 60,25

Jbutton.setbounds (New Rectangle (100, 100, 60, 25));

[Java] View Plain copy import java.awt.container;   import java.awt.dimension;   Import  java.awt.Rectangle;   import java.awt.toolkit;      import  javax.swing.jbutton;   import javax.swing.jcheckbox;   import  javax.swing.jcombobox;   import javax.swing.jframe;   import  javax.swing.jpasswordfield;   import javax.swing.jtextfield;      public  class log extends jframe {       public static void  main (String[] args)  {           log log  = new log ();       }       private  JButton btLog;       private JTextField tfUser;       private jpasswordfield tfpwd;       private JCheckBox pwdKeep;        private JComboBox adminType;          public  log ()  {           super ("Fixed Asset Management system");           super.setsize (380, 292);            super.setvisible (true);            super.setdefaultcloseoperation (jframe.exit_on_close);            centered (this);           btlog = new  jbutton ("Login       record");            Btlog.setbounds (New rectangle (93, 220, 180, 30))//parameters are coordinates x,y, wide, high         &nbSp;   this.setlayout (null);/Set layout manager to empty             this.add (btlog);           tfUser = new  JTextField ();           tfuser.setbounds (New Rectangle ( 73, 115, 220, 25));           this.add (TfUser) ;           tfpwd = new jpasswordfield ();            tfpwd.setbounds (New rectangle (73, 150,  220, 25));           this.add (TFPWD);           pwdkeep = new jcheckbox ("Remember Password");           pwdkeep.setbounds (New rectangle (68, 185, 110,  25));  &nbsp         this.add (pwdkeep);            admintype = new jcombobox (new string[] {  "General Staff",  "admin",   "Senior administrator" &nbsp});           admintype.setbounds (new  rectangle (183, 185, 100, 25));            this.add (admintype);          }  //Layout Center method        public void centered (Container container)  {            toolkit toolkit = toolkit.getdefaulttoolkit ();            Dimension screenSize =  Toolkit.getscreensize ();           int w =  Container.getwidth ();   &nbsP;       int h = container.getheight ();            container.setbounds ((screensize.width - w)  / 2,                     ( SCREENSIZE.HEIGHT - H)  / 2, w, h);       }   }