【Java】— —实现人物对象的增、删、改、查(注:对象的删除以逻辑删除为主,在person类中设置“删除状态字段”,字删除该字段时,将状态改为有效。)

今天我们带领大家来实现人物对象的增、删、改、查(注:对象的删除以逻辑删除为主,在person类中设置“删除状态字段”,字删除该字段时,将状态改为有效。)


目录

定义person类:

类属性:

有参和无参构造:

tostring函数的重写:

get和set函数:

总: 

添加人物函数:

删除人物函数:

查找人物函数:

修改人物属性函数:

 输出人物属性函数:

总代码:


定义person类:

类属性:

String name;

String sex;

LocalDate brithday;

boolean remove = false;

有参和无参构造:

public person() {

super();

}



public person(String name, String sex, LocalDate brithday) {

super();

this.name = name;

this.sex = sex;

this.brithday = brithday;

}

tostring函数的重写:

@Override

public String toString() {

return "[name=" + name + ", sex=" + sex + ", brithday=" + brithday + "]\n";

}

get和set函数:

public String getName() {

return name;

}



public void setName(String name) {

this.name = name;

}



public String getSex() {

return sex;

}



public void setSex(String sex) {

this.sex = sex;

}



public LocalDate getBrithday() {

return brithday;

}



public void setBrithday(LocalDate brithday) {

this.brithday = brithday;

}

总: 

class person {



String name;

String sex;

LocalDate brithday;

boolean remove = false;



public person() {

super();

}



public person(String name, String sex, LocalDate brithday) {

super();

this.name = name;

this.sex = sex;

this.brithday = brithday;

}



@Override

public String toString() {

return "[name=" + name + ", sex=" + sex + ", brithday=" + brithday + "]\n";

}



public String getName() {

return name;

}



public void setName(String name) {

this.name = name;

}



public String getSex() {

return sex;

}



public void setSex(String sex) {

this.sex = sex;

}



public LocalDate getBrithday() {

return brithday;

}



public void setBrithday(LocalDate brithday) {

this.brithday = brithday;

}



}

添加人物函数:

public static void add(Vector v) {

System.out.println("添加人物及属性");

System.out.println("请输入添加人物的姓名:");

String n = scan.next();

System.out.println("请输入添加人物的性别:");

String s = scan.next();

System.out.println("请输入添加人物的出生日期(格式:年 月 日)");

int y = scan.nextInt();

int m = scan.nextInt();

int d = scan.nextInt();

v.add(new person(n, s, LocalDate.of(y, m, d)));

System.out.println("添加成功");

}

删除人物函数:

public static void del(Vector v) {

System.out.println("请输入删除人物的姓名:");

B: for (;;) {

String n1 = scan.next();

int i;

for (i = 0; i < v.size(); i++) {

if (v.get(i).getName().equals(n1) && v.get(i).remove == false) {

v.get(i).remove = true;

System.out.println("删除成功!");

if (i == v.size() - 1)

break B;

}

}

if (i >= v.size())

System.out.println("未找到该人物!请重新输入:");

}

}

查找人物函数:

public  static void find(Vector v) {

System.out.println("请输入要查找人物的姓名:");

C: for (;;) {

String n2 = scan.next();

int i1;

for (i1 = 0; i1 < v.size(); i1++) {

if (v.get(i1).getName().equals(n2) &&  v.get(i1).remove == false) {

System.out.println("查找成功!该人物的相关属性为:" + v.get(i1));

if (i1 == v.size() - 1)

break C;

}

}

if (i1 >= v.size())

System.out.println("查找失败!请重新输入:");

}

}

修改人物属性函数:

public static void chage(Vector v) {

System.out.println("请输入您要修改的人物的姓名:");

D: for (;;) {

String n3 = scan.next();

int i2;

for (i2 = 0; i2 < v.size(); i2++) {

if (v.get(i2).getName().equals(n3) &&  v.get(i2).remove == false) {

System.out.println("该用户存在,下面进入修改操作:");

System.out.println("请输入修改后人物的姓名:");

String n0 = scan.next();

System.out.println("请输入修改后人物的性别:");

String s0 = scan.next();

System.out.println("请输入修改后人物的出生日期(格式:年 月 日)");

int y0 = scan.nextInt();

int m0 = scan.nextInt();

int d0 = scan.nextInt();

v.get(i2).setName(n0);

v.get(i2).setSex(s0);

v.get(i2).setBrithday(LocalDate.of(y0, m0, d0));

System.out.println("恭喜你修改成功!!修改后的人物及其属性为:");

System.out.println(v.get(i2));

break D;

}

}

if (i2 >= v.size()) {

System.out.println("该人物不存在!请重新输入:");

}

}

}

 输出人物属性函数:

public static void put(Vector v) {

int i3;

for (i3 = 0; i3 < v.size(); i3++) {

if ( v.get(i3).remove == false)

System.out.println(v.get(i3));

}

}

总代码:

package one;



import java.time.LocalDate;

import java.util.Calendar;

import java.util.Scanner;

import java.util.Vector;



public class New {

static Scanner scan = new Scanner(System.in);



public static void main(String[] args) {

// TODO Auto-generated method stub

person p1 = new person("liubei", "男", LocalDate.of(1993, 8, 15));

person p2 = new person("guanyu", "男", LocalDate.of(1997, 9, 24));

person p3 = new person("diaochan", "女", LocalDate.of(1994, 2, 28));

person p4 = new person("miyue", "女", LocalDate.of(1995, 12, 8));

Vector v1 = new Vector();

v1.add(p1);

v1.add(p2);

v1.add(p3);

v1.add(p4);

A: for (;;) {

System.out.println("请输入你需要执行的操作的下标:");

System.out.println("1.添加人物及属性");

System.out.println("2.删除人物及属性");

System.out.println("3.查找人物");

System.out.println("4.修改人物属性");

System.out.println("5.输出所有人物及属性");

System.out.println("6.退出");

System.out.println("---------------------------------");

int choice = scan.nextInt();

switch (choice) {

case 1:

add(v1);

break;

case 2:

del(v1);

break;

case 3:

find(v1);

break;

case 4:

chage(v1);

break;

case 5:

put(v1);

break;

case 6:

System.out.println("您已退出!!再见!");

break A;

default:

System.out.println("输入错误,请重新输入:");

}

System.out.println("------------------------------------");

}

}

public static void add(Vector v) {

System.out.println("添加人物及属性");

System.out.println("请输入添加人物的姓名:");

String n = scan.next();

System.out.println("请输入添加人物的性别:");

String s = scan.next();

System.out.println("请输入添加人物的出生日期(格式:年 月 日)");

int y = scan.nextInt();

int m = scan.nextInt();

int d = scan.nextInt();

v.add(new person(n, s, LocalDate.of(y, m, d)));

System.out.println("添加成功");

}

public static void del(Vector v) {

System.out.println("请输入删除人物的姓名:");

B: for (;;) {

String n1 = scan.next();

int i;

for (i = 0; i < v.size(); i++) {

if (v.get(i).getName().equals(n1) && v.get(i).remove == false) {

v.get(i).remove = true;

System.out.println("删除成功!");

if (i == v.size() - 1)

break B;

}

}

if (i >= v.size())

System.out.println("未找到该人物!请重新输入:");

}

}

public  static void find(Vector v) {

System.out.println("请输入要查找人物的姓名:");

C: for (;;) {

String n2 = scan.next();

int i1;

for (i1 = 0; i1 < v.size(); i1++) {

if (v.get(i1).getName().equals(n2) &&  v.get(i1).remove == false) {

System.out.println("查找成功!该人物的相关属性为:" + v.get(i1));

if (i1 == v.size() - 1)

break C;

}

}

if (i1 >= v.size())

System.out.println("查找失败!请重新输入:");

}

}

public static void chage(Vector v) {

System.out.println("请输入您要修改的人物的姓名:");

D: for (;;) {

String n3 = scan.next();

int i2;

for (i2 = 0; i2 < v.size(); i2++) {

if (v.get(i2).getName().equals(n3) &&  v.get(i2).remove == false) {

System.out.println("该用户存在,下面进入修改操作:");

System.out.println("请输入修改后人物的姓名:");

String n0 = scan.next();

System.out.println("请输入修改后人物的性别:");

String s0 = scan.next();

System.out.println("请输入修改后人物的出生日期(格式:年 月 日)");

int y0 = scan.nextInt();

int m0 = scan.nextInt();

int d0 = scan.nextInt();

v.get(i2).setName(n0);

v.get(i2).setSex(s0);

v.get(i2).setBrithday(LocalDate.of(y0, m0, d0));

System.out.println("恭喜你修改成功!!修改后的人物及其属性为:");

System.out.println(v.get(i2));

break D;

}

}

if (i2 >= v.size()) {

System.out.println("该人物不存在!请重新输入:");

}

}

}

public static void put(Vector v) {

int i3;

for (i3 = 0; i3 < v.size(); i3++) {

if ( v.get(i3).remove == false)

System.out.println(v.get(i3));

}

}

}



class person {



String name;

String sex;

LocalDate brithday;

boolean remove = false;



public person() {

super();

}



public person(String name, String sex, LocalDate brithday) {

super();

this.name = name;

this.sex = sex;

this.brithday = brithday;

}



@Override

public String toString() {

return "[name=" + name + ", sex=" + sex + ", brithday=" + brithday + "]\n";

}



public String getName() {

return name;

}



public void setName(String name) {

this.name = name;

}



public String getSex() {

return sex;

}



public void setSex(String sex) {

this.sex = sex;

}



public LocalDate getBrithday() {

return brithday;

}



public void setBrithday(LocalDate brithday) {

this.brithday = brithday;

}



}

注:该程序存在部分bug,检查出来的友友可以放在评论区,感谢!!!总代码或分代码有部分不解的友友可以在评论区提问或者关注博主,私信提问!

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