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By heritage JFrame class and its descendant classes (subclasses direct) can use the data and / or methods of the superclass Frame, Window, Container, and Component Object awt library.

JFrame class is slightly incompatible with the Frame class. Like every other top-level container of the Swing library, a JFrame contains a JRootPane as its only element. The contentPane provided by the RootPane should as a rule, contain all non-menu components displayed by the JFrame.

Frame Unlike a JFrame has some notion of how to respond when the user tries to close the window. The default behavior is to simply hide the JFrame when the user closes the window. To change the default behavior is to invoke the method setDefaultCloseOperation ().

I. - CLASS HIERARCHY

II .- METHODS

Create Void

ATTRIBUTES
static int	EXIT_ON_CLOSE	The default output to close a window.
BUILDERS
	JFrame ()	Create a new frame that is initially visible
	JFrame (String title)	a new frame with the title indicated as a parameter
METHODS
Return Type Method		Description
Container	getContentPane ()	Returns the contentPane object.
int	getDefaultCloseOperation ()	Returns the operation that occurs when the user operation closing the window frame
JMenuBar	getJMenuBar ()	Returns the MenuBar established in the frame
void	remove (Component comp)	Remove the specified component as a parameter of this container
void	setContentPane (Container contentPane)	Sets the contentPane property
	setDefaultCloseOperation (int operation)	Sets the operation will happen by default when the user closes the window
void	setJMenuBar (JMenuBar menu)	Sets the menubar for the frame
void	setLayout (LayoutManager layout)	By default, the distribution of this component panels should not be changed; instead, it should be changed the distribution of its contentPane which is usually a panel.

III .- OTHER METHODS

• To Put the name in the window JFrame:
  
  
  

   this.setTitle ("title frame "); 
   

  
  
• To maximize JFrame window
  
  
  

   this.setExtendedState (this.MAXIMIZED_BOTH) 
   

  
  
• To disable the close button from JFrame
  
  
  

   this.setDefaultCloseOperation (0) ; 
   
   

   this.setDefaultCloseOperation (this.DO_NOTHING_ON_CLOSE) 

  
  
• To make the frame visible
  
  
  

   this.setVisible (true); 

NOTE: All of these methods must be invoked in the constructor of the JFrame; ie

public

 Main () {
 
 panAcceso panAcces = new (); 
 admin = new Manager (); 
 ListaAlumnos listadoAlu = new (); 
 initComponents (); 
 date = new Date () ; 
 / / Maximize the window 
 this.setExtendedState JFrame (this.MAXIMIZED_BOTH) 
 / / Prevents the frame with cierrre Esquival exit button to this.setDefaultCloseOperation (0); 
 this.setDefaultCloseOperation (this.DO_NOTHING_ON_CLOSE) 
 this.setTitle (INTEGRAL SYSTEM OF LETTERS - NO "); 
 lblFecha.setText (" "+ fecha.iniciarComponentes () ) 
 
 try {
 UIManager.setLookAndFeel (UIManager.getSystemLookAndFeelClassName ()); 
 
} catch (Exception e) {
 
 e.printStackTrace (); 
}} 
 

IV .- EXAMPLES

1. Design an application with two frames, a welcome and a farewell activated through buttons as shown below: