Example usage for java.lang Class forName

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:X.java

public static void main(String[] args) {
    try {/*w  w w.j  a v  a 2 s.  co  m*/
        Class<?> clazz = Class.forName("X");
        X x = (X) clazz.newInstance();
        Class[] argTypes = { String.class };
        Method method = clazz.getMethod("objectMethod", argTypes);
        Annotation[] annos = method.getAnnotations();
        for (Annotation anno : annos) {
            System.out.println(anno);
        }
        System.out.println();

    } catch (Exception e) {
        System.err.println(e);
    }
}

From source file:TestOCINet8App.java

public static void main(String args[]) throws ClassNotFoundException, SQLException {

    Class.forName("oracle.jdbc.driver.OracleDriver");
    // or you can use:
    //  DriverManager.registerDriver(
    //   new oracle.jdbc.driver.OracleDriver());
    Connection conn = DriverManager.getConnection("jdbc:oracle:oci8:@(DESCRIPTION = "
            + "(ADDRESS_LIST = (ADDRESS = " + "(PROTOCOL = TCP)(HOST = dssw2k01)(PORT = 1521)))"
            + "(CONNECT_DATA = (SERVICE_NAME = dssw2k01)))", "scott", "tiger");

    Statement stmt = conn.createStatement();
    ResultSet rset = stmt.executeQuery("select 'Hello OCI driver tester '||USER||'!' result from dual");
    while (rset.next())
        System.out.println(rset.getString(1));
    rset.close();/*from  w  ww.j a  v  a  2 s.c  o  m*/
    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 isBatchingSupported = metadata.supportsBatchUpdates();
    System.out.println("Batching Supported = " + isBatchingSupported);
    connection.close();/*from w  w w  .  j  a va2 s . c om*/
}

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 isSupportTransaction = metadata.supportsTransactions();
    System.out.println("Support Transaction = " + isSupportTransaction);
    connection.close();//  w  w  w  .  j ava 2s .c  om
}

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 maxLength = metadata.getMaxTableNameLength();
    System.out.println("Max Table Name Length = " + maxLength);
    connection.close();/*from  ww  w.j  ava  2 s .  co m*/
}

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 maxConnection = metadata.getMaxConnections();
    System.out.println("Maximum Connection = " + maxConnection);
    connection.close();/*from w w w  .j av a 2 s .  c o  m*/
}

From source file:Main.java

public static void main(String[] args) throws Exception {

    Class.forName("oracle.jdbc.driver.OracleDriver");
    Connection conn = DriverManager.getConnection(url, username, password);
    conn.setAutoCommit(false);/*from w ww .ja  v  a2  s  . c  o  m*/

    String sql = "INSERT INTO documents (name, description, data) VALUES (?, ?, ?)";
    PreparedStatement stmt = conn.prepareStatement(sql);
    stmt.setString(1, "a.txt");
    stmt.setString(2, "b");

    File data = new File("C:\\a.txt");
    FileReader reader = new FileReader(data);
    stmt.setCharacterStream(3, reader, (int) data.length());
    stmt.execute();

    conn.commit();
    reader.close();
    conn.close();

}

From source file:Main.java

public static void main(String[] args) {
    Connection conn = null;/*  w ww  .  j a  va2 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(DRIVER);
    Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);
    DatabaseMetaData metadata = connection.getMetaData();
    String[] functions = metadata.getTimeDateFunctions().split(",\\s*");

    for (int i = 0; i < functions.length; i++) {
        String function = functions[i];
        System.out.println("Function = " + function);
    }//from   w w  w  .j  a  va 2 s. co  m
    connection.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();

    String[] functions = metadata.getSystemFunctions().split(",\\s*");

    for (int i = 0; i < functions.length; i++) {
        String function = functions[i];
        System.out.println("Function = " + function);
    }/*from ww w .j  a  va2 s . c o  m*/
}