java-7th folder updated 📈

Author: iamisha

java-7th/ConnectDb.class

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+import java.sql.*;// importing the sql package
+
+class ConnectDb{
+    public static void main(String [] args){
+        try{
+            // register the Driver Class
+            Class.forName("com.mysql.cj.jdbc.Driver");
+            //connect to the database
+            Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/hackathon", "root", "len0v0@33214");
+
+            // create Statement
+            Statement st = con.createStatement();
+
+            // Query
+
+            String query = "SELECT * FROM participants";
+
+            // executing the query
+
+            ResultSet rs = st.executeQuery(query);
+
+            while(rs.next()){
+                System.out.println("ID:- "+ rs.getInt(1) + "\nName:- " + rs.getString(2)+"\nSkills:- " + rs.getString(3));
+                
+            }
+
+            con.close();
+        }catch(ClassNotFoundException e){
+            System.out.println(e.getMessage());
+        }catch(SQLException e){
+            System.out.println(e.getMessage());
+        }
+    }
+}

java-7th/ConnectDb.java

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+import java.sql.*;
+
+
+public class StudentDb {
+
+    public static void main(String [] args){
+
+    try{
+        // Register the Driver class
+        Class.forName("com.mysql.cj.jdbc.Driver");
+
+        // Connect to the Database
+
+        Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/ncit", "root", "len0v0@33214");
+
+        // create Statement
+
+        Statement st = con.createStatement();
+
+        String query = "SELECT * FROM students WHERE faculty = 'SE'";
+
+        ResultSet rs = st.executeQuery(query);
+
+        while(rs.next()){
+
+            System.out.println("Roll Number:- " + rs.getInt(1)+ "\nName:- "+ rs.getString(2) + "\nFaculty:- " + rs.getString(3));
+
+        }
+
+        con.close();
+
+    }catch(ClassNotFoundException e)
+    {
+        System.out.println(e.getMessage());
+    }catch(SQLException e){
+        System.out.println(e.getMessage());
+    }
+    
+}
+}

java-7th/StudentDb.class

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+**Steps to connect  Java application to the database :sagittarius:**
+
+step 1:- Register the Driver class
+
+step 2:- Connect to the Database
+
+step 3:- Prepare/create Statement
+
+step 4:- Execute Query
+
+step 5: Close the connection
+
+**How to compile and run the program? ❓**
+
+step 1: import the .jar file into your workspace
+
+step2: compile the Java program as `javac Example.java`
+
+step3: provide the complete jar file path and run the program as
+
+java -p complete_path_of_jar_file.jar JavaFileName
+
+**Note 🗒️** :- There are various other methods of setting the path of jar file except this, so you set the path according 
+
+to your choice...
+
+
+# `LABA-7 Programming Question 📖`
+*Qn no. 1:- Write a Java Program to show all the data of the table*
+
+Answer:- *ConnectDb.java*
+
+**Qn no. 2:- Write a Java Program to print only those records whose faculty is SE given table name Students**
+
+Answer:- *StudentJDb.java*