Tag: Java

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How to use the Logging API in Java programs

Added by 4 years ago

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1. Overview 1.1. Logging Logging is the process of writing log messages during the execution of a program to a central place. This logging allows you to report and persists error and warning messages a...

Test Driven Development and JUnit

Added by 4 years ago

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One of the big changes in software engineering, and part of the agile methodology shift, is Test Driven Development (TDD). This puts writing tests near the front of the development process, not at the end as in older ...

Learn more about Java Standard Tag Library

Added by 4 years ago

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Java Standard Tag Library JSTL also known as Java Standard Tag Library is a collection of various tags for performing tasks like iteration, conditional checks, data formatting, localization etc. These tags are gath...

Full HD Hibernate tutorial series [part 2] – Configure Eclipse with Hibernate

Added by 4 years ago

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1. Create a "User library" Using top menu click "Window" -> "Preferences" -> Type user -> "User Librairies" -> "New" Click "Add Jar" -> "DerbyClient.jar" Click "Add Jar" -> Select Hibernate J...

Full HD Hibernate tutorial series [part 3] – Write hibernate.cfg.xml file

Added by 4 years ago

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Your hibernate.cfg.xml file should look like this <property name="hibernate.connection.driver_class"> org.apache.derby.jdbc.ClientDriver </property> <property name="hibernate.connection.url"> jdbc:...

Full HD Hibernate tutorial series [part 4] – Create Employee class

Added by 4 years ago

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The Employee class should look like this @Entity public class Employee{ private int empId; private String empName; @Id public int getEmpId(){ return empId; } public void setEmpId(int empId){ ...

Full HD Hibernate tutorial series [part 5] – Write a TestEmployee test class

Added by 4 years ago

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public class TestEmployee{ public static void main(){ AnnotationConfiguration conf = new AnnotationConfiguration5-, conf.addAnnotatedClass(Employee.class); new SchemaExport(conf).create(true, true); } }

Full HD Hibernate tutorial series [part 6 ] – Create your own Schema

Added by 4 years ago

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Add this line to your hibernate.cfg.xml file <property name="hibernate.default_schema"> TESTSCHEMA <property> Using SQL scrapbook, execute this statement CREATE SCHEMA testSchema;

Full HD Hibernate tutorial series [part 7] – Insert data into database

Added by 4 years ago

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public class TestEmployee{ public static void main(){ AnnotationConfiguration conf = new AnnotationConfiguration5-, conf.addAnnotatedClass(Employee.class); new SchemaExport(conf).create(true, true); ...

Full HD Hibernate tutorial series [part 8] – Questions and answers about Hibernate

Added by 4 years ago

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What are the uses of @Entity and @Id tag? @Entity annotation indicates that the class should persist to the database. @Id annotation represents a unique primary key How do you tell Hibernate which classes are to ...

Full HD Hibernate tutorial series [part 9] – More annotations

Added by 4 years ago

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How to give a custom name of a table? @Table(name="myTableName") How to give a custom name of a column? @Column(name="myColumnName") How to prevent an attribute in a class from being saved into database table? @T...

Full HD Hibernate tutorial series [part 10] – Add a primary key

Added by 4 years ago

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How to add a UNIQUE field? @GeneratedValue //It generates a unique value How to add a UNIQUE primary key field and make it auto-complete? @GeneratedValue(strategy=GenerationType.AUTO) //It generates a uni...

Importance and role of OGNL and ValueStack in Struts2 Framework

Added by 4 years ago

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http://java9s.com In this session i have explained about the importance and role of OGNL and ValueStack in Struts2 Framework. i have explained how OGNL offers the expression language in form tags and type conversion....

Struts 2 – The ValueStack

Added by 4 years ago

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We'll now look at how data from the action class is made available to Struts 2 tags. We'll understand a few core concepts of the framework. This will also be our first look at the ValueStack object.

How to doawnload and install the Java Development Kit?

Added by 4 years ago

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***MAKE SURE TO WATCH IN HIGH QUALITY**** How to download and install the Java Development Kit

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