Example usage for java.sql Connection close

List of usage examples for java.sql Connection close

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Introduction

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

Prototype

void close() throws SQLException;

Source Link

Document

Releases this Connection object's database and JDBC resources immediately instead of waiting for them to be automatically released.

Usage

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 text stream
    File file = new File("yourFileName.txt");
    int fileLength = (int) file.length();
    InputStream stream = (InputStream) new FileInputStream(file);

    pstmt.setString(1, "001");
    pstmt.setAsciiStream(2, stream, fileLength);

    // insert the data
    pstmt.executeUpdate();/*from   w w w  .  jav  a2 s  .c  o m*/

    ResultSet rs = stmt.executeQuery("SELECT * FROM survey");
    while (rs.next()) {
        System.out.print(new String(rs.getBytes(2)));
    }

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

From source file:DemoPreparedStatementSetAsciiStream.java

public static void main(String[] args) {
    Connection conn = null;
    PreparedStatement pstmt = null;
    String query = null;/*w  ww .j a v  a 2  s  .  c om*/
    try {
        conn = getConnection();
        String fileName = "fileName.txt";
        File file = new File(fileName);
        int fileLength = (int) file.length();
        InputStream stream = (InputStream) new FileInputStream(file);

        query = "insert into  LONG_VARCHAR_TABLE(id, stream) values(?, ?)";
        pstmt = conn.prepareStatement(query);
        pstmt.setString(1, fileName);
        pstmt.setAsciiStream(2, stream, fileLength);

        int rowCount = pstmt.executeUpdate();
        System.out.println("rowCount=" + rowCount);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            pstmt.close();
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

From source file:DemoPreparedStatementSetTimeAndTimestamp.java

public static void main(String[] args) throws Exception {
    String id = "0001";
    Connection conn = null;
    PreparedStatement pstmt = null;
    try {/*w w w. ja va2s. co m*/
        conn = getConnection();
        String query = "insert into time_table(id,time_column, timestamp_column) values(?, ?, ?)";
        pstmt = conn.prepareStatement(query);
        pstmt.setString(1, id);
        java.sql.Time time = getCurrentJavaSqlTime();
        System.out.println("time=" + time);
        pstmt.setTime(2, time);
        java.sql.Timestamp timestamp = getCurrentJavaSqlTimestamp();
        System.out.println("timestamp=" + timestamp);
        pstmt.setTimestamp(3, timestamp);
        // execute query, and return number of rows created
        int rowCount = pstmt.executeUpdate();
        System.out.println("rowCount=" + rowCount);
    } finally {
        pstmt.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.j a  v  a2 s  .c o 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 = getHSQLConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    st.executeUpdate("create table survey (id int,name varchar);");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
    st.executeUpdate("insert into survey (id,name ) values (2,'anotherValue')");

    JdbcRowSet jdbcRS = new JdbcRowSetImpl(conn);
    jdbcRS.setType(ResultSet.TYPE_SCROLL_INSENSITIVE);
    String sql = "SELECT * FROM survey";
    jdbcRS.setCommand(sql);//from   ww  w  .  j a v a2 s.c  o m
    jdbcRS.execute();
    jdbcRS.addRowSetListener(new ExampleListener());

    while (jdbcRS.next()) {
        System.out.println("id=" + jdbcRS.getString(1));
        System.out.println("name=" + jdbcRS.getString(2));
    }
    conn.close();
}

From source file:Main.java

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

    conn.setAutoCommit(false);/*from   www  . j a v  a 2 s  . com*/
    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:GetDateFromOracle.java

public static void main(String args[]) {
    String GET_RECORD = "select date_column, time_column, " + "timestamp_column from TestDates where id = ?";
    ResultSet rs = null;/* www.j  a va 2s.c  o  m*/
    Connection conn = null;
    PreparedStatement pstmt = null;
    try {
        conn = getConnection();
        pstmt = conn.prepareStatement(GET_RECORD);
        pstmt.setString(1, "0001");
        rs = pstmt.executeQuery();
        while (rs.next()) {
            java.sql.Date dbSqlDate = rs.getDate(1);
            java.sql.Time dbSqlTime = rs.getTime(2);
            java.sql.Timestamp dbSqlTimestamp = rs.getTimestamp(3);
            System.out.println("dbSqlDate=" + dbSqlDate);
            System.out.println("dbSqlTime=" + dbSqlTime);
            System.out.println("dbSqlTimestamp=" + dbSqlTimestamp);
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            rs.close();
            pstmt.close();
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

From source file:Main.java

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

    st.executeUpdate("create table survey (Id int, b CLOB);");

    PreparedStatement pstmt = conn.prepareStatement("INSERT INTO survey VALUES(1,?)");

    File file = new File("c:/Java_Dev/data.txt");

    FileReader reader = new FileReader(file);
    pstmt.setCharacterStream(1, reader);

    pstmt.execute();//from  w w  w.j a v a 2  s .c o  m

    ResultSet resultSet = pstmt.executeQuery("select b from survey ");

    File data = new File("C:\\a.txt");
    Reader dataReader = resultSet.getCharacterStream(1);
    FileWriter writer = new FileWriter(data);
    char[] buffer = new char[1];
    while (dataReader.read(buffer) > 0) {
        writer.write(buffer);
    }
    writer.close();

    reader.close();
    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_READ_ONLY);

    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 forward
    while (rs.next()) {
        String id = rs.getString("id");
        System.out.println(id);/* w  w  w.j  a  v a  2 s  .  c  o  m*/
    }
    // Move cursor to the first row
    rs.first();
    // Get data at cursor
    String id = rs.getString("id");
    System.out.println(id);

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

From source file:CreateStores.java

public static void main(String args[]) {

    String url = "jdbc:mySubprotocol:myDataSource";
    Connection con;
    String createTable;/* w w  w .  j  a  va 2  s  .c o  m*/
    String createArray;
    createArray = "CREATE TYPE COF_ARRAY AS ARRAY(10) OF VARCHAR(40)";
    createTable = "CREATE TABLE STORES ( " + "STORE_NO INTEGER, LOCATION ADDRESS, "
            + "COF_TYPES COF_ARRAY, MGR REF MANAGER )";
    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();

        stmt.executeUpdate(createArray);
        stmt.executeUpdate(createTable);

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

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