Create a Frame in Java
Introduction
This program shows you how to create a frame in java AWT package. The frame in java works like the main window where your components
(controls) are
added to develop a application. In the Java AWT, top-level windows are
represented by the Frame class. Java supports the look and feel and decoration
for the frame. For creating java standalone application you must provide GUI to
the user.
The most common method of creating a frame is by using single argument constructor of the
Frame
class that contains the single string argument which is the title of the window
or frame. Then you can add user interface by constructing and adding different components
to the container one by one.
In this program we are constructing a label to display "Welcome
to Roseindia.net Tutorial." message on the frame. The center alignment of the label has been defined by the Label.CENTER.
The frame initially invisible, so after creating the frame it need to visualize
the frame by setVisible(true) method.
add(lbl):
This method has been used to add the label to the frame. Method add()
adds a component to it's container.
setSize (width, height):
This is the method of the Frame class that sets the size of the frame or window. This
method takes two arguments width (int), height (int).
setVisible(boolean):
This is also a method of the Frame class sets the visibility of the
frame. The frame will be invisible if you pass the boolean value false
otherwise frame will be visible.
Here is the code of the progam :
import java.awt.*;
public class AwtFrame{
public static void main(String[] args){
Frame frm = new Frame("Java AWT Frame");
Label lbl = new Label("Welcome to Roseindia.net Tutorial.",Label.CENTER);
frm.add(lbl);
frm.setSize(400,400);
frm.setVisible(true);
}
}
|
Download this example.
|
Del.icio.us
Digg
Google
Spurl
Blink
Furl
Simpy
Y! MyWeb
