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Tip of the Day
Language: Java
Expertise: Intermediate
Nov 28, 2005

WEBINAR:

On-Demand

Application Security Testing: An Integral Part of DevOps


Using Reflection to Execute Class Methods at Runtime

Suppose you have a class and want to use it at runtime. The code below shows how you can load the class and execute a desired method at runtime. The assumption here is that the method name's is setProperties and it takes an argument of type java.util.Properties.

Class newClass = null;

Method getInstanceMethod = null;

Properties prop = new Properties();
prop.put("argName", "argValue");
try
{


	Object obj = newClass.newInstance();
	getInstanceMethod = newClass.getMethod("setProperties", 
new Class[]{new Properties().getClass()});

}
catch (Exception ex)
{
	//Exception in loading Class:" + ex.getMessage();
}
MS Sridhar
 
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