Java Technology Lab 12 PDF

Lab 11: Hibernate

Aim: To study Hibernate—CRUD and Basic mapping annotations

Programming Exercise:

1. Write a Hibernate program to perform CRUD operations on an Employee table using

annotations.

Table: employee_info

Columns:

empId (INT, Primary Key, Auto Increment)

empName (VARCHAR)

department (VARCHAR)

salary (INT)

Perform the following CRUD operations using Hibernate:

Insert a new employee record

CODE:-

Employee_info.java

package org.example;

import jakarta.persistence.*;

@Entity

@Table(name = "employee_info")

public class employee_info {

@Id

@GeneratedValue(strategy = GenerationType.IDENTITY)

private int empId;

private String empName;

private String Dept;

private int salary;

public employee_info(String empName,String dept,int salary){

this.empName=empName;

this.Dept=dept;

this.salary=salary;

}

public int getEmpId() {

return empId;

}

public void setEmpId(int empId) {

this.empId = empId;

}

public String getEmpName() {

return empName;

}

public void setEmpName(String empName) {

this.empName = empName;

}

public String getDept() {

return Dept;

}

public void setDept(String dept) {

Dept = dept;

}

public int getSalary() {

return salary;

}

public void setSalary(int salary) {

this.salary = salary;

}

App.java

package org.example;

import org.hibernate.Session;

import org.hibernate.Transaction;

public class App {

public static void main(String[] args){

Session session

=HibernateUtil.getSessionFactory().openSession();

Transaction tx = session.beginTransaction();

employee_info e = new employee_info("Palak","CE",50000);

employee_info e1=new employee_info("Akshaya","CE",60000);

employee_info e2=new employee_info("Helly","IT",70000);

employee_info e3=new employee_info("Dhanvi","EC",65000);

session.persist(e);

session.persist(e1);

session.persist(e2);

session.persist(e3);

tx.commit();

session.close();

}

OUTPUT:

Fetch an employee by empId

Update employee salary by empId

Delete an employee record by empId

Overview

Java Technology Lab 12

Java Technology Lab 12 focuses on practical applications of Java programming concepts. It covers essential topics such as object-oriented programming, data structures, and algorithms. Students will engage in hands-on exercises to enhance their coding skills and understanding of Java technology. This lab is designed for computer science students looking to deepen their knowledge in Java development and programming methodologies. Key Points Covers fundamental Java programming concepts and techniques. Includes hands-on exercises for practical coding experience. Focuses on object-oriented programming and data structures. Designed for computer science students enhancing their Java skills.

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FAQs

what is Java Technology Lab 12 about

Java Technology Lab 12 focuses on advanced concepts and practical applications of Java programming.

It includes hands-on exercises that reinforce theoretical knowledge.
Students will explore topics such as object-oriented programming, data structures, and algorithms.
The lab emphasizes real-world applications and problem-solving techniques.

what are the key topics in Java Technology Lab 12

Key topics in Java Technology Lab 12 include various advanced Java programming concepts.

Object-Oriented Programming: Understanding classes, objects, inheritance, and polymorphism.
Data Structures: Implementation of arrays, lists, and maps.
Algorithms: Basic sorting and searching algorithms.
Exception Handling: Techniques for managing errors in Java applications.

how to prepare for Java Technology Lab 12

Preparing for Java Technology Lab 12 involves a solid understanding of Java fundamentals.

Review core Java programming concepts, including syntax and control structures.
Practice coding exercises to enhance problem-solving skills.
Familiarize yourself with the lab environment and tools used for development.
Participate in study groups to discuss challenging topics and share insights.

what are the learning outcomes of Java Technology Lab 12

The learning outcomes of Java Technology Lab 12 include mastering advanced Java programming techniques.

Students will be able to design and implement Java applications effectively.
They will gain experience in using data structures and algorithms to solve complex problems.
Students will enhance their debugging and testing skills, ensuring code quality.

what tools are used in Java Technology Lab 12

Java Technology Lab 12 utilizes various tools essential for Java development.

Integrated Development Environment (IDE): Tools like Eclipse or IntelliJ IDEA for coding.
Version Control: Git for managing code changes and collaboration.
Build Tools: Maven or Gradle for project management and dependencies.

what are the common challenges in Java Technology Lab 12

Common challenges faced in Java Technology Lab 12 include understanding complex concepts and debugging code.

Students may struggle with advanced data structures and algorithms.
Debugging can be challenging, particularly with larger codebases.
Time management during lab sessions may also pose difficulties.

how is Java Technology Lab 12 structured

Java Technology Lab 12 is structured to provide a balance of theory and practical application.

Each lab session typically begins with a brief lecture on the topic.
Followed by hands-on coding exercises to reinforce learning.
Students are encouraged to collaborate and share solutions.

what are the assessment methods in Java Technology Lab 12

Assessment methods in Java Technology Lab 12 include practical coding assignments and projects.

Students are evaluated based on their ability to complete lab exercises.
Projects may require the application of multiple concepts learned throughout the course.
Quizzes may also be administered to test theoretical understanding.

what programming concepts are emphasized in Java Technology Lab 12

Java Technology Lab 12 emphasizes several key programming concepts.

Encapsulation: Protecting data through access modifiers.
Inheritance: Creating new classes based on existing ones.
Polymorphism: Using a single interface to represent different underlying forms.