Example usage for java.sql Connection close

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 = null;
    Statement stmt = null;//from ww  w . ja v  a2s .c om

    Class.forName(JDBC_DRIVER);
    conn = DriverManager.getConnection(DB_URL, USER, PASS);
    System.out.println("Deleting database...");
    stmt = conn.createStatement();

    conn = DriverManager.getConnection(DB_URL, USER, PASS);

    stmt = conn.createStatement();

    String sql = "CREATE TABLE Person" + "(id INTEGER not NULL, " + " firstName VARCHAR(50), "
            + " lastName VARCHAR(50), " + " age INTEGER, " + " PRIMARY KEY ( id ))";

    stmt.executeUpdate(sql);
    System.out.println("Created table in given database...");
    stmt.close();
    conn.close();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    int count = 0;
    Class.forName("com.mysql.jdbc.Driver");
    Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/jdbctutorial", "root", "root");

    String sql = "SELECT title,year_made FROM product WHERE year_made >= ? AND year_made <= ?";
    PreparedStatement prest = con.prepareStatement(sql);
    prest.setInt(1, 2000);/* w  w  w .j  av  a2s. c o  m*/
    prest.setInt(2, 2009);
    ResultSet rs = prest.executeQuery();
    while (rs.next()) {
        String mov_name = rs.getString(1);
        int mov_year = rs.getInt(2);
        count++;
        System.out.println(mov_name + "\t" + "- " + mov_year);
    }
    System.out.println("Number of records: " + count);
    prest.close();
    con.close();
}

From source file:SimpleConnection.java

static public void main(String args[]) {
    Connection connection = null;

    if (args.length != 4) {
        System.out.println("Syntax: java SimpleConnection " + "DRIVER URL UID PASSWORD");
        return;//  ww w.  j  av a2 s. co m
    }
    try {
        Class.forName(args[0]).newInstance();
    } catch (Exception e) {
        e.printStackTrace();
        return;
    }
    try {
        connection = DriverManager.getConnection(args[1], args[2], args[3]);
        System.out.println("Connection successful!");
    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection dbConnection = null;
    String myConnectionString = "";
    myConnectionString = "jdbc:mysql://192.168.1.3:3306/mytestdb";
    dbConnection = DriverManager.getConnection(myConnectionString, "root", "whatever");
    PreparedStatement stmt = dbConnection.prepareStatement("SELECT * FROM jdbctest");
    ResultSet rs = stmt.executeQuery();
    int i = 0;/*from  w ww . j a v  a 2s .  com*/
    int j = 0;
    String s = "";
    while (rs.next()) {
        i++;
        j = rs.getInt("id");
        s = rs.getString("textcol");
    }
    System.out.println(String.format("Finished reading %d rows.", i));
    rs.close();
    stmt.close();
    dbConnection.close();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Connection dbConnection = null;
    PreparedStatement preparedStatement = null;

    String createTableSQL = "CREATE TABLE Person(" + "USER_ID NUMBER(5) NOT NULL, "
            + "USERNAME VARCHAR(20) NOT NULL, " + "CREATED_BY VARCHAR(20) NOT NULL, "
            + "CREATED_DATE DATE NOT NULL, " + "PRIMARY KEY (USER_ID) " + ")";

    Class.forName(DB_DRIVER);//from   w  w  w  . jav a 2 s .co  m
    dbConnection = DriverManager.getConnection(DB_CONNECTION, DB_USER, DB_PASSWORD);

    preparedStatement = dbConnection.prepareStatement(createTableSQL);

    System.out.println(createTableSQL);

    preparedStatement.executeUpdate();

    preparedStatement.close();
    dbConnection.close();

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement stmt = null;//ww  w.jav  a  2 s . c  o  m
    ResultSet rs = null;
    conn = getConnection();
    stmt = conn.createStatement();
    stmt.executeUpdate("insert into animals_table (name) values('newName')");
    rs = stmt.getGeneratedKeys();
    while (rs.next()) {
        ResultSetMetaData rsMetaData = rs.getMetaData();
        int columnCount = rsMetaData.getColumnCount();

        for (int i = 1; i <= columnCount; i++) {
            String key = rs.getString(i);
            System.out.println("key " + i + " is " + key);
        }
    }
    rs.close();
    stmt.close();
    conn.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    conn.setAutoCommit(false);/*from w ww .j  a  v  a  2 s  .  c  o  m*/
    Statement st = conn.createStatement();

    st.executeUpdate("create table survey (id int, name VARCHAR(30) );");

    String INSERT_RECORD = "insert into survey(id, name) values(?,?)";

    PreparedStatement pstmt = conn.prepareStatement(INSERT_RECORD);

    for (int i = 0; i < 10; i++) {
        pstmt.setInt(1, i);
        pstmt.setString(2, "name" + i);
        pstmt.executeUpdate();
    }

    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 = getConnection();
    Statement st = conn.createStatement();

    st.executeUpdate("create table survey (id int,myDate TIMESTAMP );");
    String INSERT_RECORD = "insert into survey(id, myDate) values(?, ?)";

    PreparedStatement pstmt = conn.prepareStatement(INSERT_RECORD);
    pstmt.setString(1, "1");
    java.sql.Timestamp sqlDate = new java.sql.Timestamp(new java.util.Date().getTime());
    pstmt.setTimestamp(2, sqlDate);// www  .  java  2  s  .  c o  m

    pstmt.executeUpdate();

    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 {
    try {/*w w  w . j  a va 2s  .  co m*/
        String url = "jdbc:odbc:databaseName";
        String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
        String user = "guest";
        String password = "guest";
        FileInputStream fis = new FileInputStream("somefile.txt");
        Class.forName(driver);
        Connection connection = DriverManager.getConnection(url, user, password);
        Statement createTable = connection.createStatement();

        createTable.executeUpdate("CREATE TABLE source_code (name CHAR(20), source LONGTEXT)");

        String ins = "INSERT INTO source_code VALUES(?,?)";
        PreparedStatement statement = connection.prepareStatement(ins);

        statement.setString(1, "TryInputStream"); // Set first field
        statement.setAsciiStream(2, fis, fis.available()); // Stream is source

        int rowsUpdated = statement.executeUpdate();
        System.out.println("Rows affected: " + rowsUpdated);
        connection.close();
    } catch (Exception e) {
        System.err.println(e);
    }
}

From source file:DemoDisplayBinaryDataFromDatabase.java

public static void main(String args[]) throws Exception {
    Connection conn = null;
    ResultSet rs = null;/*from   www  .j  ava2  s . com*/
    PreparedStatement pstmt = null;
    String query = "SELECT raw_column, long_raw_column FROM binary_table WHERE id = ?";
    try {
        conn = getConnection();
        Object[] results = new Object[2];
        pstmt = conn.prepareStatement(query);
        pstmt.setString(1, "0001");
        rs = pstmt.executeQuery();
        rs.next();
        // materialize binary data onto client
        results[0] = rs.getBytes("RAW_COLUMN");
        results[1] = rs.getBytes("LONG_RAW_COLUMN");
    } finally {
        rs.close();
        pstmt.close();
        conn.close();
    }
}