import java.lang.reflect.*;
public class CreateInstanceDemo 
{
	public static void main(String[] args) 
	{
		//獲取Class對象用來描述自定義類Employee
		Class c = Employee.class;
		
		//聲明Object類對象，并初始化其值為空
		Object obj = null;
		try 
		{
			//運行時實例化Employee類對象
			obj = c.newInstance();
			//類型轉換，將Object類對象obj轉化為Employee類對象
			Employee em = (Employee)obj;
			
			//使用Employee對象em的方法設置屬性值
			em.set_name("wangxyw");
			em.set_age(24);
			em.set_sex("male");
			
			System.out.println(em.get_name());
			System.out.println(em.get_age());
			System.out.println(em.get_sex());
			
			//獲取實例化后的對象em的所屬類
			System.out.println(em.getClass().toString());
		} 
		catch (InstantiationException e) {e.printStackTrace();} 
		catch (IllegalAccessException e) {e.printStackTrace();}		
	}
}

class Employee   //自定義類
{
	private String name;
	private int age;
	private String sex;
	
	public Employee() //無參數構造方法
	{}
	
	//含參數構造方法
	public Employee(String name,int age,String sex)
	{
		this.name = name;
		this.age = age;
		this.sex = sex;
	}
	
	//獲取自定義類屬性值方法	
	public String get_name(){return name;}
	public int get_age(){return age;}
	public String get_sex(){return sex;}
	
	//自定義類改變屬性值方法	
	public void set_name(String name){this.name = name;}
	public void set_age(int age){this.age = age;}
	public void set_sex(String sex){this.sex = sex;}
}