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Pelajari alur filter, map, dan collect untuk mengolah data Java dengan kode yang mudah dibaca.
This example shows you how to store or save Hibernate object to database. The basic steps in creating application in Hibernate will be: Creates the POJO Create hibernate mapping file Register the mapping file in hibernate configuration Create a simple service class to store the object In this example we’ll create a class called Label, […]
When creating an application the use Hibernate to manage our application persistence object we’ll need a SessionFactory. This factory creates or open a session to talk to a database. To create a SessionFactory we can define the configuration in hibernate.properties, hibernate.cfg.xml or create it programmatically. In this example we’ll use the hibernate.cfg.xml configuration file, which […]
package org.kodejava.util; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Calendar; public class MillisecondsToDate { public static void main(String[] args) { // Create a DateFormatter object for displaying date information. DateFormat formatter = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss.SSS"); // Get date and time information in milliseconds long now = System.currentTimeMillis(); // Create a calendar object that will convert the date […]
In this example we create a small program to send email with a file attachment. To send message with attachment we need to create an email with javax.mail.Multipart object which basically will contain the email text message and then add a file to the second block, which both of them is an object of javax.mail.internet.MimeBodyPart. […]
Instead of using the StringTokenizer class or the String.split() method we can use the java.util.Scanner class to split a string. package org.kodejava.util; import java.io.File; import java.io.FileNotFoundException; import java.util.Scanner; public class ScannerTokenDemo { public static void main(String[] args) { // This file contains some data as follows: // a, b, c, d // e, f, g, […]
Here is a compact way to read file line by line using the java.util.Scanner class. package org.kodejava.util; import java.io.File; import java.io.FileNotFoundException; import java.util.Scanner; public class ScannerReadFile { public static void main(String[] args) { // Create an instance of File for data.txt file. File file = new File("README.md"); try { // Create a new Scanner object […]
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