Jvm 重复加载同一个类的结果会怎么样？

// 在此输入java代码
public class KillThenDisappear {
	public static void main(String[] args){
		String path = "c:/KillClasses/";
		String classname = "KillWithKnife";
		
		KillClassLoader kcl = new KillClassLoader(path);
		
		//此刻加载了KillWithKnife
		Class c = kcl.loadClass(classname);
		
		Object o = c.newInstance();
		
		//......此段使用这个o
		
		//Then Disappear(这里只要做到以下三点，KillWithKnife类就被卸载了)
		kcl = null;
		c = null;
		o = null;
		
		
		//注意，这里又可以重新加载类KillWithKnife进jvm了
		kcl = new KillClassLoader(path);
		
		//此刻又加载了KillWithKnife
		c = kcl.loadClass(classname);
		
		o = c.newInstance();
		
		//又可以用这个o了
	}
}