GUI programming of J2SE

AWT

Componet & Container

Frame

/*Example Name: Frame Application Example * source file name: Testframe.java * Important: Frame component creation and display settings*/Importjava.awt.*; Public classTestframe { Public Static voidMain (String args[]) {Frame F=NewFrame ("My First Test"); F.setlocation (300, 300); F.setsize (170,100);        F.setbackground (Color.Blue); F.setresizable (false); F.setvisible (true); }}

Testframe

Importjava.awt.*; Public classTestmultiframe { Public Static voidMain (String args[]) {MyFrame F1=NewMyFrame (100,100,200,200, Color.Blue); MyFrame F2=NewMyFrame (300,100,200,200, Color.yellow); MyFrame f3=NewMyFrame (100,300,200,200, Color.green); MyFrame f4=NewMyFrame (300,300,200,200, Color.magenta); }}classMyFrameextendsframe{Static intID = 0; MyFrame (intXintYintWintH,color Color) {        Super("MyFrame" + (+ +)id));        SetBackground (color); SetLayout (NULL);        SetBounds (X,Y,W,H); SetVisible (true); }}

Testmultiframe

Pannel

Importjava.awt.*; Public classTestpanel { Public Static voidMain (String args[]) {Frame F=NewFRAME ("Java Frame with Panel"); Panel P=NewPanel (NULL); F.setlayout (NULL); F.setbounds (300,300,500,500); F.setbackground (NewColor (0,0,102)); P.setbounds (50,50,400,400); P.setbackground (NewColor (204,204,255));         F.add (P); F.setvisible (true); }}

Testpanel

Importjava.awt.*; Public classTestmultipanel { Public Static voidMain (String args[]) {NewMyFrame2 ("Myframewithpanel", 300,300,400,300); }}classMyFrame2extendsframe{PrivatePanel P1,P2,P3,P4; MyFrame2 (String s,intXintYintWinth) {        Super(s); SetLayout (NULL); P1=NewPanel (NULL); P2 =NewPanel (NULL); P3=NewPanel (NULL); P4 =NewPanel (NULL); P1.setbounds (0,0,w/2,h/2); P2.setbounds (0,h/2,w/2,h/2); P3.setbounds (W/2,0,w/2,h/2); P4.setbounds (W/2,h/2,w/2,h/2);        P1.setbackground (Color.Blue);        P2.setbackground (Color.green);        P3.setbackground (Color.yellow);        P4.setbackground (Color.magenta);        Add (p1); add (p2); add (p3); Add (p4);        SetBounds (X,Y,W,H); SetVisible (true); }}

Testmultipanel

Practice

Importjava.awt.*; Public classCenterpanel { Public Static voidMain (String args[]) {NewMyFrame3 (300,300,400,300, Color.Blue); }}classMyFrame3extendsframe{PrivatePanel p; MyFrame3 (intXintYintWintH,color c) {    Super("Framewithpanel"); SetLayout (NULL);    SetBounds (X,Y,W,H);    SetBackground (c); P=NewPanel (NULL); P.setbounds (W/4,h/4,w/2,h/2);    P.setbackground (Color.yellow);    Add (P); SetVisible (true); }}

Centerpanel

Layout Manager

FlowLayout layout Manager

/*Example Name: FlowLayout Usage Example * source file name: Testflowlayout.java * Key: * 1. Layout manager concept and role * 2. The nature and usage of FlowLayout*/Importjava.awt.*; Public classTestflowlayout { Public Static voidMain (String args[]) {Frame F=NewFrame ("Flow Layout"); Button button1=Newbutton ("OK"); Button Button2=NewButton ("Open"); Button Button3=NewButton ("Close"); F.setlayout (NewFlowLayout (flowlayout.left));        F.add (button1);        F.add (button2);        F.add (Button3); F.setsize (100,100); F.setvisible (true); }}

Testflowlayout

Importjava.awt.*; Public classTestFlowLayout2 { Public Static voidMain (String args[]) {Frame F=NewFRAME ("Java frame"); FlowLayout l=NewFlowLayout (Flowlayout.center, 20, 40);         F.setlayout (l); F.setlocation (300,400); F.setsize (300,200); F.setbackground (NewColor (204,204,255));  for(inti = 1; i<=7; i++) {F.add (NewButton ("button")); } f.setvisible (true); }}

TestFlowLayout2

BorderLayout layout Manager

/*Example Name: BorderLayout Application Example * source file name: Testborderlayout.java * Important: FlowLayout the nature and usage of layout manager*/Importjava.awt.*; Public classTestborderlayout { Public Static voidMain (String args[]) {Frame F; F=NewFrame ("Border Layout"); Button Bn=NewButton ("BN"); Button BS=NewButton ("BS"); Button BW=NewButton ("BW"); Button be=NewButton ("Be"); Button BC=NewButton ("BC"); F.add (BN,"North"); F.add (BS,"South"); F.add (BW,"West"); F.add (BE,"East"); F.add (BC,"Center"); //You can also use the following statement        /*F.add (BN, Borderlayout.north);        F.add (BS, Borderlayout.south);        F.add (BW, borderlayout.west);        F.add (Be, borderlayout.east);        F.add (BC, Borderlayout.center); */F.setsize (200,200); F.setvisible (true); }}

Testborderlayout

GridLayout layout Manager

/*Example Name: GridLayout Application Example * source file name: Testgridlayout * Important: GridLayout the nature and usage of layout manager*/Importjava.awt.*; Public classTestgridlayout { Public Static voidMain (String args[]) {Frame F=NewFrame ("GridLayout Example"); Button B1=NewButton ("B1"); Button B2=NewButton ("B2"); Button B3=NewButton ("B3"); Button B4=Newbutton ("B4"); Button b5=NewButton ("B5"); Button b6=Newbutton ("B6"); F.setlayout (NewGridLayout (3,2));                F.add (B1);        F.add (B2);                F.add (B3);        F.add (B4);                F.add (B5);        F.add (B6);                  F.pack (); F.setvisible (true); }}

Testgridlayout

Importjava.awt.*; Public classtenbuttons { Public Static voidMain (String args[]) {Frame F=NewFRAME ("Java frame"); F.setlayout (NewGridLayout (2,1)); F.setlocation (300,400); F.setsize (300,200); F.setbackground (NewColor (204,204,255)); Panel P1=NewPanel (NewBorderLayout ()); Panel P2=NewPanel (NewBorderLayout ()); Panel P11=NewPanel (NewGridLayout (2,1)); Panel P21=NewPanel (NewGridLayout (2,2)); P1.add (NewButton ("button"), borderlayout.west); P1.add (NewButton ("button"), borderlayout.east); P11.add (NewButton ("button")); P11.add (NewButton ("button"));    P1.add (P11,borderlayout.center); P2.add (NewButton ("button"), borderlayout.west); P2.add (NewButton ("button"), borderlayout.east);  for(intI =1;i<=4;i++) {P21.add (NewButton ("button"));}    P2.add (P21,borderlayout.center);    F.add (p1); F.add (p2); F.setvisible (true); }}

tenbuttons

GUI programming of J2SE