在Java中动态执行类的静态方法

*/ 

import java.lang.reflect.*; 

public class myTestClass{ 

　private static Object pLock = new Object(); 

　private static myTestClass p_instance = null; 

　private String s_configName = ""; 

　private boolean b_isFromResource = true; 

　public static Object getInstance(String sConfigName, 

　Boolean bIsFromResource){ 

synchronized(pLock){ 

　if(null == p_instance){ 

p_instance =new myTestClass(sConfigName,bIsFromResource); 

　} 

} 

return p_instance; 

　}　 

　private myTestClass(String sConfigName,Boolean bIsFromResource){ 

s_configName = sConfigName; 

b_isFromResource = bIsFromResource.booleanValue(); 

　} 

　public void echoInfo(){ 

System.out.println("current arguments : configName=["+ 

　s_configName+"],isFromResource=["+b_isFromResource+"]"); 

　} 

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

// 设置方法的传入参数的类型. 

Class[] parameterTypes = new Class[]{ 

　java.lang.String.class, 

　java.lang.Boolean.class 

}; 

Method mGetInstance = null; 

String className = "myTestClass"; 

Class curTestClass = Class.forName(className); 

try{ 

　mGetInstance = curTestClass.getMethod("getInstance",parameterTypes); 

} 

catch(NoSuchMethodException e){ 

　e.printStackTrace(); 

　mGetInstance = null; 

} 

if(mGetInstance != null){ 

　myTestClass pObj = (myTestClass) 

mGetInstance.invoke(null,new Object[]{ 

　"src/myconfig.properties", 

　Boolean.FALSE 

} 

　); 

　pObj.echoInfo(); 

} 

else{ 

　throw 

new Exception("myTest Init Failed from class" + 

　className + 

　System.getProperty("line.seperator","\n") + 

　"method getInstance(String, Boolean) exists."); 

} 

　} 

}