Java Interface Development

java.awt no cross-platform javax.swing with cross-platform all classes start with J

JButton is the form in javax.swing corresponding to java.awt in the form of a button

Elements of the interface (found in the API documentation):

Top-level container (form) javax.swing.JFrame

Text, picture label Javax.swing.JLabel

Text input Box Javax.swing.JTextField

Password input Box Javax.swing.JPasswordField

check box (tick) Javax.swing.JCheckBox

Button Javax.swing.JButton

Picture Javax.swing.ImageIcon

Text javax.swing.String

Size Java.awt.Dimension

Flow layout Java.awt.FlowLayout (an element then an element is arranged downward, if one line is not enough to move to the next line, so by adjusting the length to be the same element alignment)

Steps to do the interface: Create an interface class and define a method for the login interface

To create a form:

Javax.swing.JFrame frame=new javax.swing.JFrame ();
Frame.settitle ("QQ login");
Frame.setsize (400,400);
Frame.setlocationrelativeto (NULL); ......... Center position (position)
Frame.setdefaultcloseoperation (Jframe.exit_on_close); ........... Click x to close all [several close several]

Dispose_on_close ..... Click X to close the corresponding one [other not off]

Do_nothing_on_close ..... Dot x doesn't have any effect

Set the layout of the form to flow layout: Java.awt.FlowLayout flow=new java.awt.FlowLayout ();
Frame.setlayout (flow);

Insert Picture label: Javax.swing.ImageIcon icon=new Javax.swing.ImageIcon (GetClass (). GetResource ("title.jpg"));

Javax.swing.JLabel iconlabel=new Javax.swing.JLabel (icon);

Iconlabel.setpreferredsize (New Java.awt.Dimension (400,200));

Frame.add (IconLabel);

Insert User name tag: Javax.swing.JLabel usernamelabel=new javax.swing.JLabel ("User name");

Usernamelabel.setpreferredsize (New Java.awt.Dimension (80,25));

Frame.add (Usernamelabel);

Insert User name Input box: Javax.swing.JTextField usernametext=new Javax.swing.JTextField ();

Usernametext.setpreferredsize (New Java.awt.Dimension (280,25));

Frame.add (Usernametext);

Or:

Javax.swing.JTextField usernametext=new Javax.swing.JTextField ();
Java.awt.Dimension untextsize=new java.awt.Dimension (280,25);
Usernametext.setpreferredsize (untextsize);
Frame.add (Usernametext);

Java Interface Development