Example usage for java.sql Statement close

Introduction

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

Prototype

void close() throws SQLException;

Source Link

Document

Releases this Statement object's database and JDBC resources immediately instead of waiting for this to happen when it is automatically closed.

Usage

From source file:Main.java

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

    conn.setAutoCommit(false);/*  w w w  .  j a  v  a2 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:JDBCQuery.java

public static void main(String[] av) {
    try {/* www.j a v  a2 s . c  o m*/
        System.out.println("Loading Driver (with Class.forName)");
        // Load the jdbc-odbc bridge driver
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

        // Enable logging
        // DriverManager.setLogStream(System.err);

        System.out.println("Getting Connection");
        Connection conn = DriverManager.getConnection("jdbc:odbc:Companies", "ian", ""); // user, passwd

        // Any warnings generated by the connect?
        checkForWarning(conn.getWarnings());

        System.out.println("Creating Statement");
        Statement stmt = conn.createStatement();

        System.out.println("Executing Query");
        ResultSet rs = stmt.executeQuery("SELECT * FROM Companies");

        System.out.println("Retrieving Results");
        int i = 0;
        while (rs.next()) {

            System.out.println("Retrieving Company ID");
            int x = rs.getInt("CustNO");
            System.out.println("Retrieving Name");
            String s = rs.getString("Company");

            System.out.println("ROW " + ++i + ": " + x + "; " + s + "; " + ".");

        }

        rs.close(); // All done with that resultset
        stmt.close(); // All done with that statement
        conn.close(); // All done with that DB connection

    } catch (ClassNotFoundException e) {
        System.out.println("Can't load driver " + e);
    } catch (SQLException e) {
        System.out.println("Database access failed " + e);
    }
}

From source file:Main.java

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

    conn.setAutoCommit(false);/*from  w  ww .  j a va  2 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:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getMySqlConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    st.executeUpdate("drop table survey;");
    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");

    String tableName = "survey";
    String query = "select count(*) from  " + tableName;
    Statement stmt = null;//from w w  w  .j a v a 2 s . c om
    ResultSet rs = null;
    try {
        stmt = conn.createStatement();
        rs = stmt.executeQuery(query);
        System.out.println("Exist");
        ;
    } catch (Exception e) {
        // table does not exist or some other problem
        //e.printStackTrace();
        System.out.println("Not Exist");
    }

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

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);

    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,null)");
    st.executeUpdate("insert into survey (id,name ) values (3,'Tom')");

    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    // Move cursor to the row to update
    rs.first();//from   ww  w. j a  va2s .c om

    // Update the value of column column_1 on that row
    rs.updateString(2, "new data");

    // Update the row; if autocommit is enabled,
    // update is committed
    rs.updateRow();

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

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getMySqlConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    st.executeUpdate("drop table survey;");
    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");

    DatabaseMetaData meta = conn.getMetaData();

    if (meta.supportsResultSetType(ResultSet.TYPE_FORWARD_ONLY)) {
        System.out.println("type name=TYPE_FORWARD_ONLY");
    }//from  ww  w. jav a2s . c  om
    if (meta.supportsResultSetType(ResultSet.TYPE_SCROLL_INSENSITIVE)) {
        System.out.println("type name=TYPE_SCROLL_INSENSITIVE");
    }
    if (meta.supportsResultSetType(ResultSet.TYPE_SCROLL_SENSITIVE)) {
        System.out.println("type name=TYPE_SCROLL_SENSITIVE");
    }

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

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);

    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,null)");
    st.executeUpdate("insert into survey (id,name ) values (3,'Tom')");

    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    // Move cursor to the row to update
    rs.first();/*from   w ww .ja v a 2  s . c  o m*/

    // Update the value of column column_1 on that row
    rs.updateString("name", "new data");

    // Update the row; if autocommit is enabled,
    // update is committed
    rs.updateRow();

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

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getMySqlConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    st.executeUpdate("drop table survey;");
    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");

    String tableName = "survey";
    String query = "select * from  " + tableName + " where 1=0";
    Statement stmt = null;//  w  w  w .  ja  v a2 s  .  c o m
    ResultSet rs = null;
    try {
        stmt = conn.createStatement();
        rs = stmt.executeQuery(query);
        System.out.println("Exist");
        ;
    } catch (Exception e) {
        // table does not exist or some other problem
        //e.printStackTrace();
        System.out.println("Not Exist");
    }

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

From source file:Join.java

public static void main(String args[]) {

    String url = "jdbc:mySubprotocol:myDataSource";
    Connection con;/*  w ww .j av a 2  s .co m*/
    String query = "select SUPPLIERS.SUP_NAME, COFFEES.COF_NAME " + "from COFFEES, SUPPLIERS "
            + "where SUPPLIERS.SUP_NAME like 'Acme, Inc.' and " + "SUPPLIERS.SUP_ID = COFFEES.SUP_ID";
    Statement stmt;

    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 rs = stmt.executeQuery(query);
        System.out.println("Supplier, Coffee:");
        while (rs.next()) {
            String supName = rs.getString(1);
            String cofName = rs.getString(2);
            System.out.println("    " + supName + ", " + cofName);
        }

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

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

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);

    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,null)");
    st.executeUpdate("insert into survey (id,name ) values (3,'Tom')");
    st = conn.createStatement();/*from w w w  .j a  v a 2s  .  co m*/
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    while (rs.next()) {
        String name = rs.getString(2);
        if (rs.wasNull()) {
            System.out.println("was NULL");
        } else {
            System.out.println("not NULL");
        }
    }

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

}