UBOIZ CODE

Below is example of how to use Pattern and Matcher in Java, to validate international phone numbers. package myjavaexample; import java.awt.Component; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.regex.Matcher; import java.util.regex.Pattern; import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JPasswordField; import javax.swing.JTextField; import javax.swing.border.EmptyBorder; public class MyJavaExample extends JFrame { private JTextField textphone = new JTextField(25); public void showFrame() { setTitle( "JFrame Login Example" ); JPanel panel = new JPanel(); panel.setBorder( new EmptyBorder(10, 10, 10, 10)); panel.setLayout( new BoxLayout(panel, BoxLayout.Y_AXIS))...

This is just simple Java login frame with username and password. package myjavaexample; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JPasswordField; import javax.swing.JTextField; import javax.swing.border.EmptyBorder; public class MyJavaExample { public void showFrame() { JFrame frame = new JFrame( "JFrame Login Example" ); JPanel panel = new JPanel(); panel.setBorder( new EmptyBorder(10, 10, 10, 10)); panel.setLayout( new GridLayout(3, 2,5,5)); JLabel username = new JLabel( "Username" ); JTextField textuser = new JTextField(25); panel.add(username); panel.add(textuser); JLabel password = new JLabel( "Password...

Java example code, how to use extends and implements in class package myjavaexample; public class MyJavaExample { private interface DoSomething { public void sound(); } private class Animal { public String voice= "Animal" ; public Animal() { } public Animal(String voice) { this .voice=voice; } } private class Pet extends Animal implements DoSomething { public Pet() { } public Pet(String voice) { super(voice); } public void sound() { System.out.println( this .voice); } } public void experiment() { Pet dog= new Pet(); dog.sound(); Pet cat= new Pet( "Miauww" ); cat.sound(); Pet bird= new Pet( "Cici" ); bird.sound(); } ...

This is Java code example to calculate factorial problem package myjavaexample; public class MyJavaExample { public static void main(String[] args) { int n=8,result=1; for ( int i=n;i>0;i--){ result*=i; } System.out.println(n+ "! = " +result); } }

Simple code to make analog clock with Java. This section is to show how to get hour, minute and second from java.util.Calendar. package myjavaexample; import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Rectangle; import java.util.Calendar; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.WindowConstants; public class MyJavaExample extends JFrame { public void openImage() { JPanel pane = new JPanel() { protected void paintComponent(Graphics g) { super.paintComponent(g); Calendar now = Calendar.getInstance(); int hour = now.get(Calendar.HOUR); int minute = now.get(Calendar.MINUTE); int second = now.get(Calendar.SECOND); Graphics2D g2d = (Graphics2D)g; g2d.translate(0.5* this .getWidth(),0.5* this .getWidth());...

This is the exemple of Java code how to rotate image. package myjavaexample; import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.geom.AffineTransform; import java.awt.image.AffineTransformOp; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.WindowConstants; public class MyJavaExample extends JFrame { private BufferedImage image; private int rotation=0; public void openImage() { try{ image = ImageIO.read( new File( "C:\\Users\\Edugame\\Documents\\kincir.png" )); }catch(IOException e){} JPanel pane = new JPanel() { protected void paintComponent(Graphics g) { super.paintComponent(g); g.setColor(Color.RED); g.fillRect(( int )(0.5*getWidt...

Here example code to set font in JLabel: package myjavaexample; import java.awt.Font; import javax.swing.BorderFactory; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.WindowConstants; public class MyJavaExample extends JFrame { public void openFrame() { JLabel label = new JLabel( "Hello World!" ); Font font = new Font( "Courier" , Font.BOLD,28); label.setFont(font); label.setBorder(BorderFactory.createEmptyBorder(10, 10, 10,10)); add(label); setTitle( "Simple Image Preview" ); setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); setSize(200,200); setLocation(200,200); pack(); setVisible( true ); } public static void main(String[] args) { MyJavaExample mainwin= new MyJavaExample(); mainwin.openFrame(); } }