A-Z About Java: 2016

Thursday 19 May 2016

refresh web page automatically in 600 milli seconds using java script and jquery

<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>

<script type="text/javascript">
var i=0;
setInterval(function() {

/* can write AJAX code here. */

$('#id-body').text("Invoked "+(i++));
}, 600);

</script>

</head>
<body>
<div id="id-body">
body of html page
</div>
</body>
</html>

Friday 15 April 2016

how to set image icon for jframe from folder using java swing

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/

package testing;

import java.awt.Image;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;

/**
*
* @author user
*/
public class Test extends javax.swing.JFrame {
Image image = null;

/**
* Creates new form Test
*/
public Test() {
initComponents();
try {
//iamges is the package name and logo.png is the image file name
image = ImageIO.read(getClass().getResource("/images/logo.png"));
setIconImage(image);
} catch (IOException ex) {
Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
}
}

/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 400, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 300, Short.MAX_VALUE)
);

pack();
}// </editor-fold>

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(Test.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Test.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Test.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Test.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}

java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Test().setVisible(true);
}
});
}

}

Friday 11 March 2016

Date to String and String to Date using java

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class DateFormatExample {

public static void main(String[] args) throws ParseException {
// TODO Auto-generated method stub
//String currentDateAsString = "Fri Apr 18 00:00:00 IST 2016";
Date currentDate = new Date();
//Date to String
String currentDateAsString=currentDate.toString();
System.out.println("String Date : "+currentDateAsString);
DateFormat dateFormatter = new SimpleDateFormat("E MMM dd HH:mm:ss Z yyyy");
//String to Date
currentDate = (Date)dateFormatter.parse(currentDateAsString);

System.out.println("Date Format : "+currentDate);
//Date to String
currentDateAsString=currentDate.toString();
System.out.println("String Date : "+currentDateAsString);
//String to Date
currentDate=dateFormatter.parse(currentDateAsString);
System.out.println("Date Format : "+currentDate);

Calendar calendar = Calendar.getInstance();
calendar.setTime(currentDate);
String customDateFormat = calendar.get(Calendar.DATE) + "-" + (calendar.get(Calendar.MONTH) + 1) + "-" +calendar.get(Calendar.YEAR);
System.out.println("Custom Date Format : " + customDateFormat);

}

}

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