Class類的方法

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package com.part1;
/**
 * 
 * @author pc
 *
 */
public class Student {
    public int sid;
    public char sex;
    private String sname;
    private String password;
    private String cardno;
    private double money;
    
    public Student() {
    }
    public Student(int
 
 sid, String sname, String password, String cardno,
            double money) {
        this.sid = sid;
        this.sname = sname;
        this.password = password;
        this.cardno = cardno;
        this.money = money;
    }
    public int getSid() {
        return sid;
    }
    public void setSid(int
 
 sid) {
        this.sid = sid;
    }
    public String getSname() {
        return sname;
    }
    public void setSname(String sname) {
        this.sname = sname;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    
 
public String getCardno() {
        return cardno;
    }
    public void setCardno(String cardno) {
        this.cardno = cardno;
    }
    public double getMoney() {
        return money;
    }
    public void setMoney(double money) {
        this.money = money;
    }
    
    public char getSex() {
        return sex;
    }
    public void setSex(char sex) {
        this.sex = sex;
    }
    @Override
    public String toString() {
        return "Student [cardno=" + cardno + ", money=" + money + ", password="
                + password + ", sex=" + sex + ", sid=" + sid + ", sname="
                + sname + "]";
    }
    
    
    

}

package com.part1;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class Test {
    public static void main(String[] args) throws ClassNotFoundException, SecurityException, NoSuchFieldException, NoSuchMethodException {
        //1.獲取Class對象
        //1.1 第一種獲取Class對象方法：對象名.getClass()
        Student stu=new Student(1, "李震東", "123", "3201121990", 47.5);
        Class<Student> cla1=(Class<Student>) stu.getClass();
        System.out.println(cla1);
        
        //1.2 第二種獲取Class對象的方法：類名.class;
        Class<Student> cla2=Student.class;
        System.out.println(cla2);
        
        //1.3 第三種獲取Class對象的方法：
        Class<Student> cla3=(Class<Student>) Class.forName("com.part1.Student");
        System.out.println(cla3);
        
        //2.獲取屬性
        //2.1先獲取所有public屬性
        System.out.println("--------2.1先獲取所有public屬性---------");
        Field[] fields1=cla1.getFields();
        for (Field field : fields1) {
            System.out.println(field);
        }
        //2.2 獲取某個屬性
        System.out.println("---------2.2獲取某個屬性---------");
        Field field2 =cla2.getField("sex");
        System.out.println(field2);
        
        //3.獲取方法
        //3.1 獲取所有的public方法
        System.out.println("------3.1 獲取所有的public方法------");
        Method[] methods=cla1.getMethods();
        for (Method method : methods) {
            System.out.println(method);
        }
        
        //3.2 獲取某個public方法
        System.out.println("---------3.2 獲取某個public方法---------");
        Method method2=cla2.getMethod("setSname", String.class);
        System.out.println(method2);
        
        
        
        
        

    }

}

package com.part1;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class Test {
    public static void main(String[] args) throws ClassNotFoundException, SecurityException, NoSuchFieldException, NoSuchMethodException {
        //1.獲取Class對象
        //1.1 第一種獲取Class對象方法：對象名.getClass()
        Student stu=new Student(1, "李震東", "123", "3201121990", 47.5);
        Class<Student> cla1=(Class<Student>) stu.getClass();
        System.out.println(cla1);
        
        //1.2 第二種獲取Class對象的方法：類名.class;
        Class<Student> cla2=Student.class;
        System.out.println(cla2);
        
        //1.3 第三種獲取Class對象的方法：
        Class<Student> cla3=(Class<Student>) Class.forName("com.part1.Student");
        System.out.println(cla3);
        
        //2.獲取屬性
        //2.1先獲取所有public屬性
        System.out.println("--------2.1先獲取所有public屬性---------");
        Field[] fields1=cla1.getFields();
        for (Field field : fields1) {
            System.out.println(field);
        }
        //2.2 獲取某個屬性
        System.out.println("---------2.2獲取某個屬性---------");
        Field field2 =cla2.getField("sex");
        System.out.println(field2);
        
        //3.獲取方法
        //3.1 獲取所有的public方法
        System.out.println("------3.1 獲取所有的public方法------");
        Method[] methods=cla1.getMethods();
        for (Method method : methods) {
            System.out.println(method);
        }
        
        //3.2 獲取某個public方法
        System.out.println("---------3.2 獲取某個public方法---------");
        Method method2=cla2.getMethod("setSname", String.class);
        System.out.println(method2);
        
        
        
        
        

    }

}

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