Main.java Source code

Introduction

Here is the source code for Main.java

Source

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

public class Main {
    public static void main(String[] args) {
        Connection conn = null;
        Statement stmt = null;
        ResultSet rs = null;
        try {
            String driver = "oracle.jdbc.driver.OracleDriver";
            Class.forName(driver).newInstance();
            System.out.println("Connecting to database...");
            String jdbcUrl = "jdbc:oracle:thin:@localhost:1521:ORCL";
            conn = DriverManager.getConnection(jdbcUrl, "yourName", "mypwd");
            stmt = conn.createStatement();
            try {
                rs = stmt.executeQuery("Select * from no_table_exisits");
            } catch (SQLException seRs) {
                String exMsg = "Message from MySQL Database";
                String exSqlState = "Exception";
                SQLException mySqlEx = new SQLException(exMsg, exSqlState);
                seRs.setNextException(mySqlEx);
                throw seRs;
            }
        } catch (SQLException se) {
            int count = 1;
            while (se != null) {
                System.out.println("SQLException " + count);
                System.out.println("Code: " + se.getErrorCode());
                System.out.println("SqlState: " + se.getSQLState());
                System.out.println("Error Message: " + se.getMessage());
                se = se.getNextException();
                count++;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}