MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.sql.Connection;
import java.sql.Statement;
import java.sql.DriverManager;
import java.sql.SQLException;

public class MainClass {

    private static final String EMPLOYEE_TABLE = "create table MyEmployees3 ( "
            + "   id INT PRIMARY KEY, firstName VARCHAR(20), lastName VARCHAR(20), "
            + "   title VARCHAR(20), salary INT " + ")";

    public static Connection getConnection() throws ClassNotFoundException, SQLException {
        String driver = "oracle.jdbc.driver.OracleDriver";
        String url = "jdbc:oracle:thin:@localhost:1521:database";
        String username = "name";
        String password = "pass";
        Class.forName(driver);
        Connection conn = DriverManager.getConnection(url, username, password);
        return conn;
    }

    public static void main(String args[]) {
        Connection conn = null;
        Statement stmt = null;
        try {
            conn = getConnection();
            stmt = conn.createStatement();
            stmt.executeUpdate(EMPLOYEE_TABLE);
            stmt.executeUpdate("insert into MyEmployees3(id, firstName) values(100, 'A')");
            stmt.executeUpdate("insert into MyEmployees3(id, firstName) values(200, 'B')");
            System.out.println("CreateEmployeeTableOracle: main(): table created.");
        } catch (ClassNotFoundException e) {
            System.out.println("error: failed to load Oracle driver.");
            e.printStackTrace();
        } catch (SQLException e) {
            System.out.println("error: failed to create a connection object.");
            e.printStackTrace();
        } catch (Exception e) {
            System.out.println("other error:");
            e.printStackTrace();
        } finally {
            try {
                stmt.close();
                conn.close();
            } catch (Exception e) {
            }
        }
    }
}