Example usage for java.sql Statement executeQuery

Introduction

In this page you can find the example usage for java.sql Statement executeQuery.

Prototype

ResultSet executeQuery(String sql) throws SQLException;

Source Link

Document

Executes the given SQL statement, which returns a single ResultSet object.

Usage

From source file:PoolingDriverExample.java

public static void main(String[] args) {
    ////from w ww .  j a  va 2  s . c o m
    // First we load the underlying JDBC driver.
    // You need this if you don't use the jdbc.drivers
    // system property.
    //
    System.out.println("Loading underlying JDBC driver.");
    try {
        Class.forName("org.h2.Driver");
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
    System.out.println("Done.");

    //
    // Then we set up and register the PoolingDriver.
    // Normally this would be handled auto-magically by
    // an external configuration, but in this example we'll
    // do it manually.
    //
    System.out.println("Setting up driver.");
    try {
        setupDriver(args[0]);
    } catch (Exception e) {
        e.printStackTrace();
    }
    System.out.println("Done.");

    //
    // Now, we can use JDBC as we normally would.
    // Using the connect string
    //  jdbc:apache:commons:dbcp:example
    // The general form being:
    //  jdbc:apache:commons:dbcp:<name-of-pool>
    //

    Connection conn = null;
    Statement stmt = null;
    ResultSet rset = null;

    try {
        System.out.println("Creating connection.");
        conn = DriverManager.getConnection("jdbc:apache:commons:dbcp:example");
        System.out.println("Creating statement.");
        stmt = conn.createStatement();
        System.out.println("Executing statement.");
        rset = stmt.executeQuery(args[1]);
        System.out.println("Results:");
        int numcols = rset.getMetaData().getColumnCount();
        while (rset.next()) {
            for (int i = 1; i <= numcols; i++) {
                System.out.print("\t" + rset.getString(i));
            }
            System.out.println("");
        }
    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        try {
            if (rset != null)
                rset.close();
        } catch (Exception e) {
        }
        try {
            if (stmt != null)
                stmt.close();
        } catch (Exception e) {
        }
        try {
            if (conn != null)
                conn.close();
        } catch (Exception e) {
        }
    }

    // Display some pool statistics
    try {
        printDriverStats();
    } catch (Exception e) {
        e.printStackTrace();
    }

    // closes the pool
    try {
        shutdownDriver();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

From source file:ManualPoolingDriverExample.java

public static void main(String[] args) {
    ////from w  w w .j a  v  a2s.com
    // First we load the underlying JDBC driver.
    // You need this if you don't use the jdbc.drivers
    // system property.
    //
    System.out.println("Loading underlying JDBC driver.");
    try {
        Class.forName("oracle.jdbc.driver.OracleDriver");
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
    System.out.println("Done.");

    //
    // Then we set up and register the PoolingDriver.
    // Normally this would be handled auto-magically by
    // an external configuration, but in this example we'll
    // do it manually.
    //
    System.out.println("Setting up driver.");
    try {
        setupDriver(args[0]);
    } catch (Exception e) {
        e.printStackTrace();
    }
    System.out.println("Done.");

    //
    // Now, we can use JDBC as we normally would.
    // Using the connect string
    //  jdbc:apache:commons:dbcp:example
    // The general form being:
    //  jdbc:apache:commons:dbcp:<name-of-pool>
    //

    Connection conn = null;
    Statement stmt = null;
    ResultSet rset = null;

    try {
        System.out.println("Creating connection.");
        conn = DriverManager.getConnection("jdbc:apache:commons:dbcp:example");
        System.out.println("Creating statement.");
        stmt = conn.createStatement();
        System.out.println("Executing statement.");
        rset = stmt.executeQuery(args[1]);
        System.out.println("Results:");
        int numcols = rset.getMetaData().getColumnCount();
        while (rset.next()) {
            for (int i = 1; i <= numcols; i++) {
                System.out.print("\t" + rset.getString(i));
            }
            System.out.println("");
        }
    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        try {
            if (rset != null)
                rset.close();
        } catch (Exception e) {
        }
        try {
            if (stmt != null)
                stmt.close();
        } catch (Exception e) {
        }
        try {
            if (conn != null)
                conn.close();
        } catch (Exception e) {
        }
    }

    // Display some pool statistics
    try {
        printDriverStats();
    } catch (Exception e) {
        e.printStackTrace();
    }

    // closes the pool
    try {
        shutdownDriver();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement stmt = conn.createStatement();

    stmt.executeUpdate("create table survey (id int, name BINARY );");

    String sql = "INSERT INTO survey (name) VALUES(?)";
    PreparedStatement pstmt = conn.prepareStatement(sql);

    // prepare small binary stream
    File smallFile = new File("yourFileName.txt");
    int smallFileLength = (int) smallFile.length();
    InputStream smallStream = (InputStream) new FileInputStream(smallFile);

    pstmt.setBinaryStream(2, smallStream, smallFileLength);

    // insert the data
    pstmt.executeUpdate();//from  w w  w.  j a v  a  2 s.c  om

    ResultSet rs = stmt.executeQuery("SELECT * FROM survey");
    while (rs.next()) {
        System.out.print(rs.getString(1));
    }

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

---

From source file:InsertRow.java

public static void main(String args[]) {

    String url = "jdbc:mySubprotocol:myDataSource";
    Connection con;/*from   w  w w. j ava  2  s  .c  om*/
    Statement stmt;
    String query = "select COF_NAME, PRICE from COFFEES";

    try {

        Class.forName("myDriver.ClassName");

    } catch (java.lang.ClassNotFoundException e) {
        System.err.print("ClassNotFoundException: ");
        System.err.println(e.getMessage());
    }

    try {

        con = DriverManager.getConnection(url, "myLogin", "myPassword");

        stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
        ResultSet uprs = stmt.executeQuery("SELECT * FROM COFFEES");

        uprs.moveToInsertRow();

        uprs.updateString("COF_NAME", "Kona");
        uprs.updateInt("SUP_ID", 150);
        uprs.updateFloat("PRICE", 10.99f);
        uprs.updateInt("SALES", 0);
        uprs.updateInt("TOTAL", 0);

        uprs.insertRow();
        uprs.beforeFirst();

        System.out.println("Table COFFEES after insertion:");
        while (uprs.next()) {
            String s = uprs.getString("COF_NAME");
            int sup = uprs.getInt("SUP_ID");
            float f = uprs.getFloat("PRICE");
            int sales = uprs.getInt("SALES");
            int t = uprs.getInt("TOTAL");
            System.out.print(s + "   " + sup + "   " + f + "   ");
            System.out.println(sales + "   " + t);
        }

        uprs.close();
        stmt.close();
        con.close();

    } catch (SQLException ex) {
        System.err.println("SQLException: " + ex.getMessage());
    }
}

---

From source file:mx.com.pixup.portal.demo.DemoDisqueraSelect.java

public static void main(String[] args) {
    System.out.println("BIENVENIDO A PIXUP");
    System.out.println("Mantenimiento catlogo disquera");
    System.out.println("Listado de disqueras");

    Connection connection = null;
    Statement statement = null;
    ResultSet resultSet = null;//w  ww .ja v a 2 s  . c  o  m
    try {
        BasicDataSource dataSource = new BasicDataSource();
        dataSource.setDriverClassName("com.mysql.jdbc.Driver");
        dataSource.setUsername("root");
        dataSource.setPassword("admin");
        dataSource.setUrl("jdbc:mysql://127.0.0.1:3306/pixup");

        connection = dataSource.getConnection();
        statement = connection.createStatement();

        String sql = "select * from disquera order by nombre desc";

        resultSet = statement.executeQuery(sql);

        System.out.println("ID: \t NOMBRE:");
        while (resultSet.next()) {
            Integer id = resultSet.getInt(1);
            String nombre = resultSet.getString(2);
            System.out.println(id + " \t " + nombre);
        }

    } catch (Exception e) {
        System.out.println("Error en el sistema, intente ms tarde!!" + e.getMessage());
    } finally {
        if (resultSet != null) {
            try {
                resultSet.close();
            } catch (Exception e) {
            }
        }
        if (statement != null) {
            try {
                statement.close();
            } catch (Exception e) {
            }
        }
        if (connection != null) {
            try {
                connection.close();
            } catch (Exception e) {
            }
        }
    }
}

---

From source file:TestBatchUpdate.java

public static void main(String args[]) {
    Connection conn = null;//ww  w .j  a va 2s. c o  m
    Statement stmt = null;
    ResultSet rs = null;
    try {
        conn = getConnection();
        stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
        conn.setAutoCommit(false);
        stmt.addBatch("INSERT INTO batch_table(id, name) VALUES('11', 'A')");
        stmt.addBatch("INSERT INTO batch_table(id, name) VALUES('22', 'B')");
        stmt.addBatch("INSERT INTO batch_table(id, name) VALUES('33', 'C')");
        int[] updateCounts = stmt.executeBatch();
        conn.commit();

        rs = stmt.executeQuery("SELECT * FROM batch_table");
        while (rs.next()) {
            String id = rs.getString("id");
            String name = rs.getString("name");
            System.out.println("id=" + id + "  name=" + name);
        }

    } catch (BatchUpdateException b) {
        System.err.println("SQLException: " + b.getMessage());
        System.err.println("SQLState: " + b.getSQLState());
        System.err.println("Message: " + b.getMessage());
        System.err.println("Vendor error code: " + b.getErrorCode());
        System.err.print("Update counts: ");
        int[] updateCounts = b.getUpdateCounts();
        for (int i = 0; i < updateCounts.length; i++) {
            System.err.print(updateCounts[i] + " ");
        }
    } catch (SQLException ex) {
        System.err.println("SQLException: " + ex.getMessage());
        System.err.println("SQLState: " + ex.getSQLState());
        System.err.println("Message: " + ex.getMessage());
        System.err.println("Vendor error code: " + ex.getErrorCode());
    } catch (Exception e) {
        System.err.println("Exception: " + e.getMessage());
    } finally {
        try {
            rs.close();
            stmt.close();
            conn.close();
        } catch (Exception ignore) {
        }
    }
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getHSQLConnection();

    conn.setAutoCommit(false);//www  . j  a va2  s . c om
    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();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getHSQLConnection();

    conn.setAutoCommit(false);// w  w  w  . java2  s  .co m
    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();
}

---

From source file:com.jt.dbcp.example.ManualPoolingDriverExample.java

public static void main(String[] args) {
    ///*from  w w  w .  j av  a 2  s . c  o m*/
    // First we load the underlying JDBC driver.
    // You need this if you don't use the jdbc.drivers
    // system property.
    //
    System.out.println("Loading underlying JDBC driver.");
    try {
        Class.forName("com.mysql.jdbc.Driver");
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
    System.out.println("Done.");

    //
    // Then we set up and register the PoolingDriver.
    // Normally this would be handled auto-magically by
    // an external configuration, but in this example we'll
    // do it manually.
    //
    System.out.println("Setting up driver.");
    try {
        setupDriver(args[0]);
    } catch (Exception e) {
        e.printStackTrace();
    }
    System.out.println("Done.");

    //
    // Now, we can use JDBC as we normally would.
    // Using the connect string
    //  jdbc:apache:commons:dbcp:example
    // The general form being:
    //  jdbc:apache:commons:dbcp:<name-of-pool>
    //

    Connection conn = null;
    Statement stmt = null;
    ResultSet rset = null;

    try {
        System.out.println("Creating connection.");
        //pool
        conn = DriverManager.getConnection("jdbc:apache:commons:dbcp:example");
        System.out.println("Creating statement.");
        stmt = conn.createStatement();
        System.out.println("Executing statement.");
        rset = stmt.executeQuery(args[1]);
        System.out.println("Results:");
        int numcols = rset.getMetaData().getColumnCount();
        int count = 0;
        while (rset.next()) {
            count++;
            if (count == 10) {
                break;
            }
            for (int i = 1; i <= numcols; i++) {
                System.out.print("\t" + rset.getString(i));
            }
            System.out.println("");
        }
    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        try {
            if (rset != null)
                rset.close();
        } catch (Exception e) {
        }
        try {
            if (stmt != null)
                stmt.close();
        } catch (Exception e) {
        }
        try {
            if (conn != null)
                conn.close();
        } catch (Exception e) {
        }
    }

    // Display some pool statistics
    try {
        printDriverStats();
    } catch (Exception e) {
        e.printStackTrace();
    }

    // closes the pool
    try {
        shutdownDriver();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

From source file:mx.com.pixup.portal.demo.DemoDisqueraUpdate.java

public static void main(String[] args) {
    System.out.println("BIENVENIDO A PIXUP");
    System.out.println("Mantenimiento catlogo disquera");
    System.out.println("Actualizacin de Disquera");

    InputStreamReader isr = new InputStreamReader(System.in);
    BufferedReader br = new BufferedReader(isr);
    Connection connection = null;
    Statement statement = null;
    ResultSet resultSet = null;/* w  ww  .jav a  2  s.com*/
    try {
        BasicDataSource dataSource = new BasicDataSource();
        dataSource.setDriverClassName("com.mysql.jdbc.Driver");
        dataSource.setUsername("root");
        dataSource.setPassword("admin");
        dataSource.setUrl("jdbc:mysql://127.0.0.1:3306/pixup");

        connection = dataSource.getConnection();
        statement = connection.createStatement();

        String sql = "select id, nombre from disquera order by nombre";

        resultSet = statement.executeQuery(sql);

        System.out.println("Id Disquera: \t Nombre Disquera");
        while (resultSet.next()) {
            System.out.println(resultSet.getInt("id") + " \t " + resultSet.getString("nombre"));
        }

        System.out.println("Proporcione el id de la disquera a actualizar: ");
        String idDisquera = br.readLine();

        System.out.println("Proporcione el nuevo nombre de la disquera: ");
        String nombreDisquera = br.readLine();

        sql = "update disquera set nombre = '" + nombreDisquera + "' where id = " + idDisquera;

        statement.execute(sql);

        System.out.println("Disqueras Actualizadas:");

        sql = "select id, nombre from disquera order by nombre desc";

        resultSet = statement.executeQuery(sql);

        System.out.println("Id Disquera: \t Nombre Disquera");
        while (resultSet.next()) {
            System.out.println(resultSet.getInt("id") + " \t " + resultSet.getString("nombre"));
        }

    } catch (Exception e) {
        System.out.println("Error en el sistema, intente ms tarde!!");
    } finally {
        if (resultSet != null) {
            try {
                resultSet.close();
            } catch (Exception e) {
            }
        }
        if (statement != null) {
            try {
                statement.close();
            } catch (Exception e) {
            }
        }
        if (connection != null) {
            try {
                connection.close();
            } catch (Exception e) {
            }
        }
    }
}

---

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