Example usage for java.lang Class forName

List of usage examples for java.lang Class forName

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Introduction

In this page you can find the example usage for java.lang Class forName.

Prototype

@CallerSensitive
public static Class<?> forName(String className) throws ClassNotFoundException

Source Link

Document

Returns the Class object associated with the class or interface with the given string name.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    String driverName = "com.jnetdirect.jsql.JSQLDriver";
    Class.forName(driverName);

    String serverName = "127.0.0.1";
    String portNumber = "1433";
    String mydatabase = serverName + ":" + portNumber;
    String url = "jdbc:JSQLConnect://" + mydatabase;
    String username = "username";
    String password = "password";

    Connection connection = DriverManager.getConnection(url, username, password);
    String sql = "INSERT INTO mysql_all_table(" + "col_boolean," + "col_byte," + "col_short," + "col_int,"
            + "col_long," + "col_float," + "col_double," + "col_bigdecimal," + "col_string," + "col_date,"
            + "col_time," + "col_timestamp," + "col_asciistream," + "col_binarystream," + "col_blob) "
            + "VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
    PreparedStatement pstmt = connection.prepareStatement(sql);

    pstmt.setBoolean(1, true);/*from   www .ja  va  2  s . c o m*/
    pstmt.setByte(2, (byte) 123);
    pstmt.setShort(3, (short) 123);
    pstmt.setInt(4, 123);
    pstmt.setLong(5, 123L);
    pstmt.setFloat(6, 1.23F);
    pstmt.setDouble(7, 1.23D);
    pstmt.setBigDecimal(8, new BigDecimal(1.23));
    pstmt.setString(9, "a string");
    pstmt.setDate(10, new java.sql.Date(System.currentTimeMillis()));
    pstmt.setTime(11, new Time(System.currentTimeMillis()));
    pstmt.setTimestamp(12, new Timestamp(System.currentTimeMillis()));

    File file = new File("infilename1");
    FileInputStream is = new FileInputStream(file);
    pstmt.setAsciiStream(13, is, (int) file.length());

    file = new File("infilename2");
    is = new FileInputStream(file);
    pstmt.setBinaryStream(14, is, (int) file.length());

    file = new File("infilename3");
    is = new FileInputStream(file);
    pstmt.setBinaryStream(15, is, (int) file.length());

    pstmt.executeUpdate();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName(DRIVER);
    Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);

    DatabaseMetaData metadata = connection.getMetaData();

    int majorVersion = metadata.getDatabaseMajorVersion();
    System.out.println("majorVersion = " + majorVersion);

    int minorVersion = metadata.getDatabaseMinorVersion();
    System.out.println("minorVersion = " + minorVersion);

    String productName = metadata.getDatabaseProductName();
    System.out.println("productName = " + productName);

    String productVersion = metadata.getDatabaseProductVersion();
    System.out.println("productVersion = " + productVersion);
    connection.close();/*  w  w w.  j a v  a 2 s .com*/
}

From source file:SqlException.java

public static void main(String[] args) {

    Connection conn = null;//from w  w  w. j  a  v  a2  s  . c o m
    Statement stmt = null;
    ResultSet rs = null;

    try {
        String driver = "oracle.jdbc.driver.OracleDriver";
        Class.forName(driver).newInstance();
        System.out.println("Connecting to database...");
        String jdbcUrl = "jdbc:oracle:thin:@localhost:1521:ORCL";
        conn = DriverManager.getConnection(jdbcUrl, "yourName", "mypwd");

        stmt = conn.createStatement();

        try {
            rs = stmt.executeQuery("Select * from no_table_exisits");
        } catch (SQLException seRs) {
            String exMsg = "Message from MySQL Database";
            String exSqlState = "Exception";
            SQLException mySqlEx = new SQLException(exMsg, exSqlState);
            seRs.setNextException(mySqlEx);
            throw seRs;
        }
    } catch (SQLException se) {
        int count = 1;
        while (se != null) {
            System.out.println("SQLException " + count);
            System.out.println("Code: " + se.getErrorCode());
            System.out.println("SqlState: " + se.getSQLState());
            System.out.println("Error Message: " + se.getMessage());
            se = se.getNextException();
            count++;
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    String URL = "jdbc:odbc:dbname";
    Connection dbConn = DriverManager.getConnection(URL, "user", "passw");
    Employee employee = new Employee(42, "AA", 9);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutputStream oos = new ObjectOutputStream(baos);
    oos.writeObject(employee);//  w  w w.j  a va2  s  .  c o  m
    byte[] employeeAsBytes = baos.toByteArray();
    PreparedStatement pstmt = dbConn.prepareStatement("INSERT INTO EMPLOYEE (emp) VALUES(?)");
    ByteArrayInputStream bais = new ByteArrayInputStream(employeeAsBytes);
    pstmt.setBinaryStream(1, bais, employeeAsBytes.length);
    pstmt.executeUpdate();
    pstmt.close();
    Statement stmt = dbConn.createStatement();
    ResultSet rs = stmt.executeQuery("SELECT emp FROM Employee");
    while (rs.next()) {
        byte[] st = (byte[]) rs.getObject(1);
        ByteArrayInputStream baip = new ByteArrayInputStream(st);
        ObjectInputStream ois = new ObjectInputStream(baip);
        Employee emp = (Employee) ois.readObject();
    }
    stmt.close();
    rs.close();
    dbConn.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = null;/*  w w  w.  jav  a  2 s .co m*/
    Statement stmt = null;

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

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

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName(DRIVER);
    Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);
    DatabaseMetaData metadata = connection.getMetaData();

    boolean updatable = metadata.supportsResultSetConcurrency(ResultSet.TYPE_FORWARD_ONLY,
            ResultSet.CONCUR_UPDATABLE);

    System.out.println("Updatable ResultSet supported = " + updatable);
    connection.close();/*from w w w  .  j  a v  a2 s . c  o  m*/
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = null;// w  ww.  jav  a 2s  .  c o m
    Statement stmt = null;

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

    String sql = "DROP DATABASE STUDENTS";
    stmt.executeUpdate(sql);

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

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = null;/*from w  ww  .  j a  va 2s. co m*/
    Statement stmt = null;

    Class.forName(JDBC_DRIVER);
    conn = DriverManager.getConnection(DB_URL, USER, PASS);
    stmt = conn.createStatement();

    String sql = "CREATE DATABASE STUDENTS";
    stmt.executeUpdate(sql);
    System.out.println("Database created successfully...");

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

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName(DRIVER);
    Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);

    DatabaseMetaData metadata = connection.getMetaData();
    ResultSet resultSet = metadata.getColumns(null, null, "users", null);
    while (resultSet.next()) {
        String name = resultSet.getString("COLUMN_NAME");
        String type = resultSet.getString("TYPE_NAME");
        int size = resultSet.getInt("COLUMN_SIZE");

        System.out.println("Column name: [" + name + "]; type: [" + type + "]; size: [" + size + "]");
    }//from  ww w.j a  v  a 2 s.co  m
    connection.close();
}

From source file:Main.java

public static final void main(String[] argv) throws Exception {
    Class.forName("oracle.jdbc.OracleDriver");
    Connection conn = DriverManager.getConnection("your_connection_string", "your_user_name", "your_password");
    Date nowDate = new Date();
    Timestamp nowTimestamp = new Timestamp(nowDate.getTime());
    PreparedStatement insertStmt = conn.prepareStatement(
            "INSERT INTO MyTable" + " (os_name, ts, ts_with_tz, ts_with_local_tz)" + " VALUES (?, ?, ?, ?)");
    insertStmt.setString(1, System.getProperty("os.name"));
    insertStmt.setTimestamp(2, nowTimestamp);
    insertStmt.setTimestamp(3, nowTimestamp);
    insertStmt.setTimestamp(4, nowTimestamp);
    insertStmt.executeUpdate();/*from   w  ww. j  a v a2 s .  co m*/
    insertStmt.close();
    System.out.println("os_name, ts, ts_with_tz, ts_with_local_tz");
    PreparedStatement selectStmt = conn
            .prepareStatement("SELECT os_name, ts, ts_with_tz, ts_with_local_tz" + " FROM MyTable");
    ResultSet result = null;
    result = selectStmt.executeQuery();
    while (result.next()) {
        System.out.println(String.format("%s,%s,%s,%s", result.getString(1), result.getTimestamp(2).toString(),
                result.getTimestamp(3).toString(), result.getTimestamp(4).toString()));
    }
    result.close();
    selectStmt.close();
    conn.close();
}