Using a Transaction in JDBC with Exception catching : Transation « Database « Java Tutorial

1. Java Tutorial
2. Database
3. Transation

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

public class Main {
  public static void main(String[] args) throws Exception {
    Connection conn = getHSQLConnection();
    
    conn.setAutoCommit(false);
    Statement st = conn.createStatement();
    try {
      st.executeUpdate("create table survey (id int,name varchar(30));");
      st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
      st.executeUpdate("insert into survey (id,name ) values (2,'nameValue')");
       // commits all the transactions
       conn.commit();
    }
    catch (Exception e){
       //cancel (roll back) all the transactions
       conn.rollback();
       // to see what went wrong
       e.printStackTrace();
    }
    
    
    
    st = conn.createStatement();
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    outputResultSet(rs);

    rs.close();
    st.close();
    conn.close();
  }

  private static void outputResultSet(ResultSet rs) throws Exception {
    ResultSetMetaData rsMetaData = rs.getMetaData();
    int numberOfColumns = rsMetaData.getColumnCount();
    for (int i = 1; i < numberOfColumns + 1; i++) {
      String columnName = rsMetaData.getColumnName(i);
      System.out.print(columnName + "   ");

    }
    System.out.println();
    System.out.println("----------------------");

    while (rs.next()) {
      for (int i = 1; i < numberOfColumns + 1; i++) {
        System.out.print(rs.getString(i) + "   ");
      }
      System.out.println();
    }

  }

  private static Connection getHSQLConnection() throws Exception {
    Class.forName("org.hsqldb.jdbcDriver");
    String url = "jdbc:hsqldb:mem:data/tutorial";
    return DriverManager.getConnection(url, "sa", "");
  }
}

ID   NAME   
----------------------
1   nameValue   
2   nameValue