Java Notes __ Form class/panel class/toolkit class

/*** Form Class*/ Public classMain { Public Static voidMain (string[] args) {MyFrame M1=NewMyFrame (); }}classMyFrameextendsframe{ PublicMyFrame () { This. Settitle ("My first Software");  This. SetSize (300,200);  This. SetBackground (Color.yellow);  This. setresizable (false);//resizing a form is not allowed         This. setlocation (300,300);  This. setlayout (NewFlowLayout ());//set the default layout of the form to "flow layout"//Add a button on a formButton B1 =NewButton ("Click Me.1");  This. Add (B1);  This. Add (NewButton ("Click Me.2"));  This. setvisible (true); }}

/*** Panel class (Faceplate Class), Component container*/ Public classMain { Public Static voidMain (string[] args) {Mypanel M1=NewMypanel (); }}classMypanelextendsframe{ PublicMypanel () { This. Settitle ("My first Software");  This. SetSize (600,400);  This. SetBackground (Color.yellow);  This. setresizable (false);//resizing a form is not allowed         This. setlocation (300,300);  This. setlayout (NewFlowLayout ());//set the default layout of the form to "flow layout"AddPanel ();  This. setvisible (true); }     Public voidAddPanel () {//The panel layout defaults to "pipelining layout"Panel P1 =NewPanel ();//Creating a Panel objectP1.setbackground (Color.green); P1.add (NewButton ("Click Me.1")); P1.add (NewButton ("Click Me.2")); P1.add (NewButton ("Click Me.3"));  This. Add (p1);//Add a panel to a form    }}

/*** Toolkit class: A toolkit for binding various components to the local system. */ Public classMain { Public Static voidMain (string[] args) {Mytoolkit M1=NewMytoolkit (); }}classMytoolkitextendsframe{ PublicMytoolkit () { This. Settitle ("My first Software");  This. SetSize (600,400);  This. SetBackground (Color.yellow); Toolkit T1= Toolkit.getdefaulttoolkit ();//Get Tool ObjectDimension D1 = t1.getscreensize ();//get the current screen size        DoubleW =d1.getwidth (); Doubleh =d1.getheight (); intx = (int) (W/2); inty = (int) (H/2);  This. setlocation (x-300,y-200); //Set the form icon (create a new package, put the picture in)URL url = This. GetClass (). getClassLoader (). GetResource ("pkg1/image/fish.jpg");//written pkg1.image.fish.jpg can't beImage IMA1 =t1.getimage (URL);  This. Seticonimage (IMA1);  This. setresizable (false);//resizing a form is not allowed         This. setlayout (NewFlowLayout ());//set the default layout of the form to "flow layout"                 This. setvisible (true); }}

Java Notes __ Form class/panel class/toolkit class