Hibernate

RelationShipBetweenStudentsAndCourses/pom.xml

+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>com.hibernatemanytomanyrelationship</groupId>
+	<artifactId>RelationShipBetweenStudentsAndCourses</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<packaging>jar</packaging>
+
+	<name>RelationShipBetweenStudentsAndCourses</name>
+	<url>http://maven.apache.org</url>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+	</properties>
+
+	<dependencies>
+
+		<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
+		<dependency>
+			<groupId>org.hibernate</groupId>
+			<artifactId>hibernate-core</artifactId>
+			<version>5.4.5.Final</version>
+		</dependency>
+
+		<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
+		<dependency>
+			<groupId>mysql</groupId>
+			<artifactId>mysql-connector-java</artifactId>
+			<version>8.0.15</version>
+		</dependency>
+
+
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>3.8.1</version>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+</project>
\ No newline at end of file

RelationShipBetweenStudentsAndCourses/src/main/java/com/hibernatemanytomanyrelationship/App.java

+package com.hibernatemanytomanyrelationship;
+import java.util.*;
+
+import org.hibernate.Session;
+import org.hibernate.SessionFactory;
+import org.hibernate.Transaction;
+import org.hibernate.cfg.Configuration;
+
+public class App 
+{
+    public static void main( String[] args )
+    {
+        System.out.println( "Project Started....!" );
+        Configuration cfg = new Configuration();
+        cfg.configure("hibernate.cfg.xml");
+        SessionFactory factory = cfg.buildSessionFactory();
+        
+        Students  s1 = new Students();
+        Students  s2 = new Students();
+        
+        s1.setSid(5);
+        s1.setRno("102");
+        s1.setName("M_Asad Iqbal");
+        
+        s2.setSid(6);
+        s2.setRno("106");
+        s2.setName("Arsam Ali");
+        
+        Courses c1  = new Courses();
+        Courses c2  = new Courses();
+        
+        c1.setCid(5);
+        c1.setCoursename("Java");
+
+        c2.setCid(6);
+        c2.setCoursename("JavaScript");
+        
+        List<Students> list1 = new ArrayList<Students>();
+        List<Courses> list2 = new ArrayList<Courses>();
+        
+        list1.add(s1);
+        list1.add(s2);
+        
+        list2.add(c1);
+        list2.add(c2);
+        
+        s1.setCourses(list2);
+        
+        c2.setStudents(list1);
+        
+        Session s = factory.openSession(); 
+        Transaction txt = s.beginTransaction();
+        
+        s.save(s1);
+        s.save(s2);
+        s.save(c1);
+        s.save(c2);
+        
+        txt.commit();
+        
+        s.close();
+
+    }
+}

RelationShipBetweenStudentsAndCourses/src/main/java/com/hibernatemanytomanyrelationship/Courses.java

+package com.hibernatemanytomanyrelationship;
+
+import java.util.List;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.ManyToMany;
+
+@Entity
+public class Courses {
+
+	@Id
+	private int cid;
+	@Column(name="course_name")
+	private String coursename;
+	
+	@ManyToMany(mappedBy ="courses")
+	private List<Students> students;
+
+	public int getCid() {
+		return cid;
+	}
+
+	public void setCid(int cid) {
+		this.cid = cid;
+	}
+
+	public String getCoursename() {
+		return coursename;
+	}
+
+	public void setCoursename(String coursename) {
+		this.coursename = coursename;
+	}
+
+	public List<Students> getStudents() {
+		return students;
+	}
+
+	public void setStudents(List<Students> students) {
+		this.students = students;
+	}
+
+	public Courses(int cid, String coursename, List<Students> students) {
+		super();
+		this.cid = cid;
+		this.coursename = coursename;
+		this.students = students;
+	}
+
+	public Courses() {
+		super();
+		// TODO Auto-generated constructor stub
+	}
+	
+	
+	
+	
+	
+	
+}

RelationShipBetweenStudentsAndCourses/src/main/java/com/hibernatemanytomanyrelationship/Students.java

+package com.hibernatemanytomanyrelationship;
+
+import java.util.List;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.ManyToMany;
+
+@Entity
+public class Students {
+
+	@Id
+	private int sid;
+	private String rno;
+	private String name;
+	
+	@ManyToMany
+	private List<Courses> courses ;
+
+	public int getSid() {
+		return sid;
+	}
+
+	public void setSid(int sid) {
+		this.sid = sid;
+	}
+
+	public String getRno() {
+		return rno;
+	}
+
+	public void setRno(String rno) {
+		this.rno = rno;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public List<Courses> getCourses() {
+		return courses;
+	}
+
+	public void setCourses(List<Courses> courses) {
+		this.courses = courses;
+	}
+
+	public Students(int sid, String rno, String name, List<Courses> courses) {
+		super();
+		this.sid = sid;
+		this.rno = rno;
+		this.name = name;
+		this.courses = courses;
+	}
+
+	public Students() {
+		super();
+		// TODO Auto-generated constructor stub
+	}
+	
+	
+	
+	
+}
+ 
\ No newline at end of file

RelationShipBetweenStudentsAndCourses/src/main/java/hibernate.cfg.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE hibernate-configuration PUBLIC
+	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
+	"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
+
+<hibernate-configuration>
+	<session-factory>
+		<property name="connection.driver_class">com.mysql.cj.jdbc.Driver</property>
+		<property name="connection.url">jdbc:mysql://localhost:3306/myhibernate</property>
+		<property name="connection.username">root</property>
+		<property name="connection.password">nisum123</property>
+		<property name="dialect">org.hibernate.dialect.MySQL55Dialect</property>
+		<property name="hbm2ddl.auto">update</property>
+		<property name="show_sql">true</property>
+		<mapping class="com.hibernatemanytomanyrelationship.Students" />
+		<mapping class="com.hibernatemanytomanyrelationship.Courses" />
+	</session-factory>
+</hibernate-configuration>
\ No newline at end of file

RelationShipBetweenStudentsAndCourses/src/test/java/com/hibernatemanytomanyrelationship/AppTest.java

+package com.hibernatemanytomanyrelationship;
+
+import junit.framework.Test;
+import junit.framework.TestCase;
+import junit.framework.TestSuite;
+
+/**
+ * Unit test for simple App.
+ */
+public class AppTest 
+    extends TestCase
+{
+    /**
+     * Create the test case
+     *
+     * @param testName name of the test case
+     */
+    public AppTest( String testName )
+    {
+        super( testName );
+    }
+
+    /**
+     * @return the suite of tests being tested
+     */
+    public static Test suite()
+    {
+        return new TestSuite( AppTest.class );
+    }
+
+    /**
+     * Rigourous Test :-)
+     */
+    public void testApp()
+    {
+        assertTrue( true );
+    }
+}