框架基础（6）_Field 类

本系列博客汇总在这里：框架基础 汇总

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Field 类要掌握的方法

代码演示

package cn.wyx.reflect;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class ReflectDemo4
{
	public static void main(String[] args) throws Exception
	{
		Class<?> class1 = Class.forName("cn.wyx.reflect.Person");
		// 获得构造器
		Constructor<?> constructor = class1.getDeclaredConstructor(new Class[] {});
		// 根据类的默认构造器来获得一个对象
		Object instance = constructor.newInstance(new Object[] {});
		// 根据方法名字来获得属性对象
		Field field = class1.getDeclaredField("name");
		// 破坏掉私有属性
		field.setAccessible(true);
		field.set(instance, "魏宇轩");
		// 获得属性的类型
		Class<?> type = field.getType();
		System.out.println(type);
	}
}

package cn.wyx.reflect;

public class Person
{
	private Integer id;

	private String name;

	private String address;

	public Person()
	{
	}

	public Person(Integer id, String name, String address)
	{
		super();
		this.id = id;
		this.name = name;
		this.address = address;
	}

	private static void printInfo()
	{
		System.out.println("静态方法的反射调用");
	}

	public Integer getId()
	{
		return id;
	}

	public void setId(Integer id)
	{
		this.id = id;
	}

	public String getName()
	{
		return name;
	}

	public void setName(String name)
	{
		this.name = name;
	}

	public String getAddress()
	{
		return address;
	}

	public void setAddress(String address)
	{
		this.address = address;
	}

	@Override
	public String toString()
	{
		return "Person [id=" + id + ", name=" + name + ", address=" + address
				+ "]";
	}
}

如有错误，欢迎指正！