Mega Code Archive
Demonstrates how to get simple method information
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/*
* file: MethodInfoDemo.java
* package: oreilly.hcj.reflection
*
* This software is granted under the terms of the Common Public License,
* CPL, which may be found at the following URL:
* http://www-124.ibm.com/developerworks/oss/CPLv1.0.htm
*
* Copyright(c) 2003-2005 by the authors indicated in the @author tags.
* All Rights are Reserved by the various authors.
*
########## DO NOT EDIT ABOVE THIS LINE ########## */
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/**
* Demonstrates how to get simple method information.
*
* @author <a href=mailto:kraythe@arcor.de>Robert Simmons jr. (kraythe)</a>
* @version $Revision: 1.3 $
*/
public class MethodInfoDemo {
/**
* __UNDOCUMENTED__
*
* @param obj
* __UNDOCUMENTED__
*
* @throws IllegalAccessException
* __UNDOCUMENTED__
* @throws InvocationTargetException
* __UNDOCUMENTED__
*/
public static void emptyStrings(final Object obj) throws IllegalAccessException,
InvocationTargetException {
final String PREFIX = "set"; //$NON-NLS-1$
Method[] methods = obj.getClass().getMethods();
for (int idx = 0; idx < methods.length; idx++) {
if (methods[idx].getName().startsWith(PREFIX)) {
if (methods[idx].getParameterTypes()[0] == String.class) {
methods[idx].invoke(obj, new Object[] { new String() });
}
}
}
}
/**
* Demo method.
*
* @param args
* Command line arguments.
*/
public static void main(final String[] args) {
String s = "";
printMethodInfo(s);
try {
emptyStrings(s);
} catch (final Exception ex) {
ex.printStackTrace();
}
}
/**
* __UNDOCUMENTED__
*
* @param obj
* __UNDOCUMENTED__
*/
public static void printMethodInfo(final Object obj) {
Class type = obj.getClass();
final Method[] methods = type.getMethods();
for (int idx = 0; idx < methods.length; idx++) {
System.out.println(methods[idx]);
}
}
}
/* ########## End of File ########## */
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