getconstructordemo.java

java的反射机制的代码实例

import java.lang.reflect.*;
public class GetConstructorDemo 
{
	public static void main(String[] args) 
	{
		Class c = Employee.class;
		Constructor con[]= c.getConstructors();
		//用于获取构造方法的名字
		System.out.println("The Constructors name are:");
		for (int i = 0; i < con.length; i++) 
		{
			//获取构造方法名
			String str = con[i].getName();
			System.out.println(str);
		}
		
		System.out.println("\nThe Constructors are:");
		//用于获取构造方法，并转换为字符串输出
		for (int i = 0; i < con.length; i++) 
		{
			String str = con[i].toString();
			System.out.println(str);
		}
	}

}

class Employee   //自定义类
{
	private String name;
	private int age;
	private String sex;
	
	public Employee() //无参数构造方法
	{}
	
	//含参数构造方法
	public Employee(String name,int age,String sex)
	{
		this.name = name;
		this.age = age;
		this.sex = sex;
	}
	
	//获取自定义类属性值方法	
	public String get_name(){return name;}
	public int get_age(){return age;}
	public String get_sex(){return sex;}
	
	//自定义类改变属性值方法	
	public void set_name(String name){this.name = name;}
	public void set_age(int age){this.age = age;}
	public void set_sex(String name){this.sex = sex;}
}