创建指定类对象

例1:

package Test1;

 

public class T {

    static{

       System.out.println("T类已经被加载");

    }

    public void sayHello(){

       System.out.println("T:你好");

    }

}

 

package Test1;

 

import java.lang.reflect.InvocationTargetException;

 

public class Test {

    public static void main(String[] args) {

       String classPath="Test1.T";  //类路径和类名

       try {

           Class c=Class.forName(classPath);  //将指定类加载到内存中      

           Object o=c.newInstance();    //创建对象        

       } catch (ClassNotFoundException e) {

           e.printStackTrace();

       } catch (InstantiationException e) {

           e.printStackTrace();

       } catch (IllegalAccessException e) {

           e.printStackTrace();

       }

    }

}