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(); } }

Here's simple Java code to make image or photo preview using JPanel. package myjavaexample; import java.awt.Dimension; import java.awt.Graphics; 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; public void openImage() { try{ image = ImageIO.read( new File( "C:\\Users\\Edugame\\Pictures\\dev_icon3.png" )); }catch(IOException e){} JPanel pane = new JPanel() { protected void paintComponent(Graphics g) { super.paintComponent(g); g.drawImage(image, 0, 0, null); } }; pane.setPreferredSize( new Dimension(image.getWidth(),image.getHeight())); add(pane); setTitle( ...

For detect a sentence contains a specific word, you can use indexOf function like example code below: package myjavaexample; public class MyJavaExample { public static void main(String[] args) { String sentence= "I like Java programming language, because its can be use in Android also" ; String word = "Java" ; if (sentence.indexOf(word) != -1) { System.out.println( "Found the word \"" + word+ "\" at index number " + sentence.indexOf(word)); } else { System.out.println( "Can't find \"" + word+ "\" inside \"" +sentence+ "\"" ); } } }

Simple Java code, how to animate 2D ball movement with circle in Java JPanel. package myjavaexample; import java.awt.Canvas; import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import javax.swing.JFrame; import javax.swing.JPanel; public class MyJavaExample extends JFrame { private MyCanvas canvas= new MyCanvas(); public void setup() { this .setSize(800,600); this .setLocation(200,200); this .setTitle( "Drawing Simple Animation" ); canvas.setPreferredSize( new Dimension(400,300)); this .add(canvas); this .setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this .setResizable( false ); this .pack(); this .setVisible( true ); canvas.calldraw(); } private class MyCanvas extends JPanel { private int x=20,y=20,vx=3,vy=4; ...

This code is show how to allow JScrollPane allowing size of parent size with GridBagLayout. package myjavaexample; import java.awt.Dimension; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.border.EmptyBorder; public class MyJavaExample extends JFrame { public void setup() { this .setSize(800,600); this .setLocation(200,200); this .setTitle( "JScrollPane Resize Allowing JFrame Size" ); this .setLayout( new GridBagLayout()); GridBagConstraints con = new GridBagConstraints(); con.fill = GridBagConstraints.BOTH; con.weightx = 1; con.weighty = 1; con.gridx = 0; con.gridy = 0; JPanel panel= new JPanel(); panel.setLayout( new GridBagLayout()); panel.setBorder( new Empty...

This is the Java code example how to activated right click in JTextArea. package myjavaexample; import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.event.ActionEvent; import javax.swing.Action; import javax.swing.BoxLayout; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JPopupMenu; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.KeyStroke; import javax.swing.border.EmptyBorder; import javax.swing.text.DefaultEditorKit; import javax.swing.text.JTextComponent; import javax.swing.text.TextAction; public class MyJavaExample extends JFrame { public void setup() { this .setSize(800,600); this .setLocation(200,200); this .setTitle( "JTextArea Right Click" ); this .setLayout( new BorderLayout()); JPanel panel= new JPanel(); panel.setBorder( new EmptyBorder(5, 10, 5, 10)); JTextArea t...

This is simple code to highlight Java code to insert in HTML page: package htmltotext; import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.border.EmptyBorder; public class HTMLtoText extends JFrame { private JTextArea textArea = new JTextArea(); private JTextArea textHasil = new JTextArea(); private String[] tobiru= new String[]{ "new" , "package" , "import" , "public" , "private" , "protected" , "extends" , "implements" , "for" , "if" , "while" , "class" , "int" , "float" , "double" , "this" , "true...

Simple Java multithread code that use thread as array and Thread.currentThread().getId function: Code package myjavaexample; public class MyJavaExample extends Thread { public void run() { System.out.println( "Thread ID=" +Thread.currentThread().getId()); } public static void main(String[] args) { MyJavaExample[] example= new MyJavaExample[10]; for ( int i=0;i<example.length;i++){ example[i]= new MyJavaExample(); example[i].start(); } } }

Simple Java Hello World with Netbeans. The code: package myjavaexample; public class MyJavaExample { public static void main(String[] args) { System.out.println("Hello World!"); } }

Here the simple Java code to make a mini application to create sitemap in my static web. I build with JFrame and FileOutputStream for write result to file. package sitemap.maker; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedWriter; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStreamWriter; import java.io.Writer; import javax.swing.Box; import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JSeparator; import javax.swing.JTextField; import javax.swing.border.EmptyBorder; public class SiteMapMaker extends JFrame { private JTextField jnama=new JTextField(25); private JLabel jl = new JLabel(); private String checkIndexPHP(String path,int id,File folder) { File[] files = folder.listFiles(); ...

Code 1 package fibonaccinumber; 2 3 import java.util.Arrays; 4 5 public class FibonacciNumber 6 { 7 public static int [] generate ( int num) 8 { 9 int [] result= new int [num]; 10 result[0]=0; 11 result[1]=1; 12 for ( int i=2;i<num;i++){ 13 result[i]=result[i-1]+result[i-2]; 14 if (result[i]<0){ 15 System. out .println( " Out of range! " ); 16 break ; 17 } 18 } 19 return result; 20 } 21 public static void main (String[] args) { 22 int num=20; //numbers of fibonacci number 23 int [] fibo=FibonacciNumber . generate (20); 24 System. out .println(Arrays. toString (fibo)); 25 } 26 } 27 Output run: [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181] BUILD SUCCESSFUL (total time: 0 seconds) Video Tutorial

Code 1 package primenumber; 2 3 import java.util.Arrays; 4 5 public class PrimeNumber { 6 public static int [] generate ( int num) 7 { 8 int [] numbers= new int [num]; 9 if (num>1){ 10 numbers[0]=1; 11 } 12 int i=1,n=2; 13 while (i<num){ 14 boolean found= false ; 15 for ( int j=2;j<n;j++){ 16 if ((n%j)==0){ 17 found= true ; 18 break ; 19 } 20 } 21 if (!found){ 22 numbers[i]=n; 23 i++; 24 } 25 n++; 26 } 27 return numbers; 28 } 29 30 public static void main (String[] args) { 31 int num=20; //numbers of prime number 32 int [] prime=PrimeNumber. generate (20); 33 System. out .println(Arrays. toString (prime)); 34 } 35 } Output: run: [1, 2, 3, 5, 7, 11, 13, 17,...

This code is how to randomize the sequence of numbers. Code: 1 package random.sort; 2 3 import java.util.Arrays; 4 import java.util.Random; 5 6 public class RandomSort { 7 public static int [] generate ( int num) { 8 int [] result = new int [num]; 9 Random rand= new Random(); 10 int i = 0; 11 while (i < num) { 12 int a=rand.nextInt(num); 13 boolean exist= false ; 14 for ( int j = 0; j < i; j++) { 15 if (result[j] == a) { 16 exist= true ; 17 break ; 18 } 19 } 20 if (!exist){ 21 result[i]=a; 22 i++; 23 } 24 } 25 return result; 26 } 27 28 public static void main (String[] args) { 29 //how library work 30 int [] randomIndex=RandomSort. generate (10); 31 System. out .println( " RandomIn...