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:Main.java

public static void main(String args[]) throws Exception {
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    Connection c = DriverManager
            .getConnection("jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=c:/access.mdb");

    ResultSet rs = c.createStatement().executeQuery("select objet from Employee");

    while (rs.next()) {
        System.out.println(rs.getString("objet"));
    }/*from   w w w . j  a v  a2s .c  om*/
    rs.close();
    c.close();
}

From source file:MyClass.java

public static void main(String[] args) throws Exception {
    Class<?> clazz = Class.forName("MyClass");
    MyClass x = (MyClass) clazz.newInstance();

    Field f = clazz.getField("i");
    System.out.println(f.getByte(x)); // Output: 10
    f.setByte(x, (byte) 20);
    System.out.println(f.getByte(x)); // Output: 20

}

From source file:Main.java

public static void main(String args[]) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver");
    String url = "jdbc:oracle:thin:@localhost:1521:XE";
    String userName = "suru";
    String password = "password";
    Connection con = DriverManager.getConnection(url, userName, password);
    System.out.println("Connection success!");
    Statement stmt = con.createStatement();
    String sql = "CREATE TABLE EMP ( ID NUMBER(5) PRIMARY KEY, NAME VARCHAR2(50))";
    stmt.execute(sql);/*ww  w. j  av  a2 s. c o  m*/
    System.out.println("Table created successfully!");
    stmt.close();
    con.close();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    String url = "jdbc:odbc:datasource";
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    Connection connection = DriverManager.getConnection(url);
    System.out.println("Connect to " + connection.getCatalog() + " a success!");
}

From source file:Main.java

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

    Class.forName("oracle.jdbc.driver.OracleDriver");

    String url = "jdbc:oracle:thin:@localhost:1521:javaDemo";
    String username = "username";
    String password = "welcome";

    String sql = "CREATE TABLE books (id NUMBER(11), title VARCHAR2(64))";
    Connection connection = DriverManager.getConnection(url, username, password);
    Statement statement = connection.createStatement();
    statement.execute(sql);//from   ww  w.  j av a2  s .  c  o  m
    connection.close();
}

From source file:MyClass.java

public static void main(String[] args) throws Exception {
    Class<?> clazz = Class.forName("MyClass");
    MyClass x = (MyClass) clazz.newInstance();

    Field f = clazz.getField("i");
    System.out.println(f.getShort(x));

    f.setShort(x, (short) 9);
    System.out.println(f.getShort(x));

}

From source file:Main.java

public static void main(String args[]) throws Exception {
    String name = "java.lang.String";
    String methodName = "toLowerCase";

    Class cl = Class.forName(name);
    java.lang.reflect.Constructor constructor = cl.getConstructor(new Class[] { String.class });
    Object invoker = constructor.newInstance(new Object[] { "AAA" });
    Class arguments[] = new Class[] {};
    java.lang.reflect.Method objMethod = cl.getMethod(methodName, arguments);
    Object result = objMethod.invoke(invoker, (Object[]) arguments);
    System.out.println(result);/*from   ww w .  j a va2  s  .  co  m*/
}

From source file:MyClass.java

public static void main(String[] args) throws Exception {
    Class<?> clazz = Class.forName("MyClass");
    MyClass x = (MyClass) clazz.newInstance();

    Field f = clazz.getField("i");
    System.out.println(f.getChar(x));

    f.setChar(x, 'a');
    System.out.println(f.getBoolean(x));

}

From source file:Main.java

public static void main(String[] args) {
    String name = "java.util.Collections";
    try {// w  w w . j  a  v  a2s. c om
        Class cl = Class.forName(name);
        printMethods(cl);
    } catch (ClassNotFoundException e) {
        System.out.println("Class not found.");
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("com.mysql.jdbc.Driver").newInstance();
    Connection conn = null;//from   w  w w .  j  av  a  2s  . c o m
    conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "password");
    byte[] bkey = "This is some binary stuff".getBytes();
    String query = "INSERT INTO keytable (name, `key`) VALUES (?,?)";
    PreparedStatement pstmt = conn.prepareStatement(query);
    pstmt.setString(1, "test");
    pstmt.setBytes(2, bkey);
    pstmt.execute();
    conn.close();
}