User at 11:40, 7 January 2023

2023-01-07T11:40:13Z

User: Created page with "Java Database Connectivity (JDBC)"

2018-12-26T22:55:22Z

Created page with "Java Database Connectivity (JDBC)"

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Java Database Connectivity (JDBC)

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−	Java Database Connectivity (JDBC)	+	== What is Java Database Connectivity (JDBC)? ==
		+
		+	'''Java Database Connectivity (JDBC)''' is a Java-based data access technology that enables Java applications to connect to relational databases. It consists of a set of classes and interfaces that provide a standard API for establishing a connection to a database and executing SQL statements.
		+
		+	JDBC provides a standardized API for interacting with a database, regardless of the database vendor or type. This means that the same JDBC code can be used to connect to different databases, as long as there is a JDBC driver available for that database.
		+
		+	To use JDBC, you must first download and install a JDBC driver for the database you want to connect to. Then, you can use the JDBC API to create a connection to the database, send SQL statements, and process the results.
		+
		+	Here's a simple example of how to use JDBC to connect to a database and execute a SELECT statement:
		+
		+
		+	import java.sql.*;
		+
		+	public class JDBCExample {
		+	static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
		+	static final String DB_URL = "jdbc:mysql://localhost/test";
		+
		+	static final String USER = "username";
		+	static final String PASS = "password";
		+
		+	public static void main(String[] args) {
		+	Connection conn = null;
		+	Statement stmt = null;
		+	try{
		+	Class.forName("com.mysql.jdbc.Driver");
		+
		+	System.out.println("Connecting to database...");
		+	conn = DriverManager.getConnection(DB_URL,USER,PASS);
		+
		+	System.out.println("Creating statement...");
		+	stmt = conn.createStatement();
		+	String sql;
		+	sql = "SELECT id, first, last, age FROM Employees";
		+	ResultSet rs = stmt.executeQuery(sql);
		+
		+	while(rs.next()){
		+	int id = rs.getInt("id");
		+	int age = rs.getInt("age");
		+	String first = rs.getString("first");
		+	String last = rs.getString("last");
		+
		+	System.out.print("ID: " + id);
		+	System.out.print(", Age: " + age);
		+	System.out.print(", First: " + first);
		+	System.out.println(", Last: " + last);
		+	}
		+	rs.close();
		+	stmt.close();
		+	conn.close();
		+	}catch(SQLException se){
		+	se.printStackTrace();
		+	}catch(Exception e){
		+	e.printStackTrace();
		+	}finally{
		+	try{
		+	if(stmt!=null)
		+	stmt.close();
		+	}catch(SQLException se2){
		+	}
		+	try{
		+	if(conn!=null)
		+	conn.close();
		+	}catch(SQLException se){
		+	se.printStackTrace();
		+	}
		+	}
		+	System.out.println("Goodbye!");
		+	}
		+
		+
		+
		+
		+
		+
		+	==See Also==
		+	*[[Open Database Connectivity (ODBC)]]
		+
		+
		+
		+
		+
		+	==References==
		+	<references />

Java Database Connectivity (JDBC) - Revision history

User at 11:40, 7 January 2023

User: Created page with "Java Database Connectivity (JDBC)"