How do I pass a class as a parameter in Java?

public void foo(Class c){        try {            Object ob = c.newInstance();        } catch (InstantiationException ex) {            Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);        } catch (IllegalAccessException ex) {            Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);        }    }

• Here are some good examples on Reflection API

How to invoke method using reflection

 import java.lang.reflect.*;   public class method2 {      public int add(int a, int b)      {         return a + b;      }      public static void main(String args[])      {         try {           Class cls = Class.forName("method2");           Class partypes[] = new Class[2];            partypes[0] = Integer.TYPE;            partypes[1] = Integer.TYPE;            Method meth = cls.getMethod(              "add", partypes);            method2 methobj = new method2();            Object arglist[] = new Object[2];            arglist[0] = new Integer(37);            arglist[1] = new Integer(47);            Object retobj               = meth.invoke(methobj, arglist);            Integer retval = (Integer)retobj;            System.out.println(retval.intValue());         }         catch (Throwable e) {            System.err.println(e);         }      }   }

Also See

• Java Reflection

public void callingMethod(Class neededClass) {    //Cast the class to the class you need    //and call your method in the class    ((ClassBeingCalled)neededClass).methodOfClass();}

To call the method, you call it this way:

callingMethod(ClassBeingCalled.class);

Construct your method to accept it-

public <T> void printClassNameAndCreateList(Class<T> className){    //example access 1    System.out.print(className.getName());    //example access 2    ArrayList<T> list = new ArrayList<T>();    //note that if you create a list this way, you will have to cast input    list.add((T)nameOfObject);}

Call the method-

printClassNameAndCreateList(SomeClass.class);

You can also restrict the type of class, for example, this is one of the methods from a library I made-

protected Class postExceptionActivityIn;protected <T extends PostExceptionActivity>  void  setPostExceptionActivityIn(Class <T> postExceptionActivityIn) {    this.postExceptionActivityIn = postExceptionActivityIn;}

For more information, search Reflection and Generics.