本文主要是介绍【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。),希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
🎐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:
@Overridepublic 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;}@Overridepublic 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<person> 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<person> 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<person> 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<person> 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<person> 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 stubperson 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<person> v1 = new Vector<person>();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<person> 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<person> 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<person> 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<person> 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<person> 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;}@Overridepublic 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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