Source Code : Object Reflection: invoke methods

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Object Reflection: invoke methods

        
/* From http://java.sun.com/docs/books/tutorial/index.html */

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 * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
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import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class SampleInvoke {

  public static void main(String[] args) {
    String firstWord = "Hello ";
    String secondWord = "everybody.";
    String bothWords = append(firstWord, secondWord);
    System.out.println(bothWords);
  }

  public static String append(String firstWord, String secondWord) {
    String result = null;
    Class c = String.class;
    Class[] parameterTypes = new Class[] { String.class };
    Method concatMethod;
    Object[] arguments = new Object[] { secondWord };
    try {
      concatMethod = c.getMethod("concat", parameterTypes);
      result = (String) concatMethod.invoke(firstWord, arguments);
    } catch (NoSuchMethodException e) {
      System.out.println(e);
    } catch (IllegalAccessException e) {
      System.out.println(e);
    } catch (InvocationTargetException e) {
      System.out.println(e);
    }
    return result;
  }
}
           
         
    
    
    
    
    
    
    
  

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