Java Development GUI Program general steps:

Development GUI Program General step: 1, import java.awt.* of introduction package; Import javax.swing.*; 2, inherit JFrame public class Demo3 extends JFrame {} 3, define required components//3. Define Components JButton jb1,jb2,jb3,jb4,jb5;   int size=9;  JButton Jbs[]=new Jbutton[size]; First allocate initial space 4, create component//4. Create Component Jb1=new JButton ("Middle");   Create a component for (int i=0;i<size;i++) {jbs[i]=new JButton (string.valueof (i)); } 5, set layout Manager//Set layout manager, default is the Boundary Layout manager this.setlayout (new FlowLayout (Flowlayout.left));//Flow Layout This.add (JB1,              Borderlayout.center);  Border Layout this.setlayout (new GridLayout (3,3,10,10));  Grid layout this.setlayout (null);   Cancel Layout Manager 6, Add components//Add Components This.add (JB1); This.add (JB2);  7. Set form Properties//Set form Properties This.settitle ("Flow layout case");       Set the form title This.setsize (300, 200);   Set the form size this.setlocation (200, 400);   Set initial position this.setdefaultcloseoperation (jframe.exit_on_close);   Close the virtual machine when the form is closed//prevents the user from changing the form size this.setresizable (false); 7. Display Form this.setvisible (true);  8. Display form create component with array://define component int size=9;  JButton Jbs[]=new Jbutton[size]; Array to first allocate the initial emptyBetween//Create component for (int i=0;i<size;i++) {jbs[i]=new JButton (string.valueof (i));   }//Add component for (int i=0;i<size;i++) {this.add (jbs[i]);

Java Development GUI Program general steps: