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:Spy.java

public static void main(String... args) throws Exception {
    Class<?> c = Class.forName("Spy");
    Field[] flds = c.getDeclaredFields();
    for (Field f : flds) {
        System.out.println(f.getDeclaringClass());

    }// w ww .  j a v a  2 s.  c o m
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class driverClass = Class.forName("org.hsqldb.jdbcDriver");
    DriverManager.registerDriver((Driver) driverClass.newInstance());

    // Print out all loaded JDBC drivers.
    java.util.Enumeration e = java.sql.DriverManager.getDrivers();
    while (e.hasMoreElements()) {
        Object driverAsObject = e.nextElement();
        System.out.println("JDBC Driver=" + driverAsObject);
    }/* w  w w  .j  a v a 2 s  .co  m*/

}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Class.forName("com.mysql.jdbc.Driver");
    Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/jdbctutorial", "root", "root");
    Statement st = con.createStatement();
    st.executeUpdate("CREATE DATABASE myDB");
}

From source file:Main.java

public static void main(String... args) throws Exception {
    Class<?> c = Class.forName("java.lang.String");
    Constructor[] allConstructors = c.getDeclaredConstructors();
    for (Constructor ctor : allConstructors) {
        System.out.println(Modifier.toString(ctor.getModifiers()));
    }/*from w w w.  j a v a  2  s  . c  o  m*/
}

From source file:Main.java

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

    Statement st = con.createStatement();
    st.executeUpdate("ALTER TABLE mytable DROP col");
    System.out.println("Column is deleted successfully!");
}

From source file:MainClass.java

public static void main(String[] args) {
    try {/*from  w w  w .  j  av a 2 s. co  m*/
        String className = "org.gjt.mm.mysql.Driver";
        Class driverObject = Class.forName(className);
        System.out.println("driverObject=" + driverObject);
        System.out.println("your installation of JDBC Driver OK.");
    } catch (Exception e) {
        System.out.println("Failed: JDBC Driver Error: " + e.getMessage());
    }

}

From source file:ConnectionExample.java

public static void main(String args[]) {
    try {/*from  w  w w . j  a  v a2 s. co m*/
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    } catch (Exception e) {
        System.out.println("JDBC-ODBC driver failed to load.");
        return;
    }

    try {
        Connection con = DriverManager.getConnection("jdbc:odbc:Inventory", "", "");
        con.close();
    } catch (Exception e) {
        System.out.println(e);
    }
}

From source file:Main.java

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

    Statement st = con.createStatement();
    int n = st.executeUpdate("ALTER TABLE mytable DROP INDEX col");
    System.out.println("Query OK, " + n + " rows affected.");
}

From source file:Main.java

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

    Statement st = con.createStatement();
    int n = st.executeUpdate("ALTER TABLE myTable CHANGE old_col  new_col int");
    System.out.println("Query OK, " + n + " rows affected");
}

From source file:Main.java

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

    // returns the Class object for the class with the specified name
    Class cls = Class.forName("java.lang.ClassLoader");

    // returns the name and package of the class
    System.out.println("Class found = " + cls.getName());
    System.out.println("Package = " + cls.getPackage());

}