package test0812;

public class Person {
    
    

	private String name;
	private int age;

	// 创建构造方法,在new时就给属性传值
	public Person() {
    
    
	}

	public Person(String name, int age) {
    
    
		this.name = name;
		this.age = age;
	}
	
	@Override
	public String toString() {
    
    
		return this.name + "\t" + this.age;
	}

	public void eat(){
    
    
		System.out.println("在吃饭");
	}
	
	public int jia(int num1,int num2){
    
    
		return num1+num2;
	}

	public String getName() {
    
    
		return name;
	}

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

	public int getAge() {
    
    
		return age;
	}

	public void setAge(int age) {
    
    
		this.age = age;
	}

}

package test0812;
import java.lang.reflect.Method;
//调用类里边的任何方法给传任何参数,接收任何返回值
public class Test06 {
    
    

	public void createObj(String className) {
    
    
		try {
    
    
			Class clazz = Class.forName(className);
			Object obj = clazz.newInstance();
			
            //调用eat方法
			Method methodEat = clazz.getMethod("eat");//获得方法
			methodEat.invoke(obj);
			
			//调用jia方法
			Method methodjia = clazz.getMethod("jia",new Class[] {
    
    int.class,int.class});//传递信息.--有几个参数和参数类型(数组为描述类)
			Object result = methodjia.invoke(obj, new Object[] {
    
    10,20});//给参数传值(真正的对象)
			//Integer result = (Integer)methodjia.invoke(obj, new Object[] {10,20});
			System.out.println(result);//(输出返回值Integer类型自动转换为int输出)  :  在吃饭    +   30
		} catch (Exception e) {
    
    
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {
    
    
		Test06 t = new Test06();
		t.createObj("test0812.Person");
	}
}