getfieldsdemo.java

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import java.lang.reflect.*;
public class GetFieldsDemo 
{
	public static void main(String[] args) 
	{
		//获取Class对象用来描述自定义类Employee
		Class c = null;
		try 
		{
			c = Class.forName("Employee");
		} 
		catch (ClassNotFoundException e) {e.printStackTrace();}
		//获取自定义类Employee中的全部属性字段
		Field fields[] = c.getDeclaredFields();
		
		//获取自定义类中，全部属性字段名
		for (int i = 0; i < fields.length; i++) 
		{
			//获取属性字段类型
			String type = fields[i].getType().toString();
			
			//获取属性字段名
			String str = fields[i].getName();
			System.out.println("Field Type is:"+type+"\nField name is:"+str+"\n");
		}
	}
}

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;}
}