用java實現一個簡單的電話本管理系統，能存儲100個人的姓名、性別、年齡、電話等信息，并能對此系統進行增刪改查的操作。
部分代碼如下:
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public class phbook { public static void main(string[] args) { person personarray[] = new person[100]; int index = 0; for (int i = 0; i < 100; i++) { system.out.println("電話本管理系統"); system.out.println("1.添加 2.刪除 3.修改 4.查詢所有 5.根據姓名查詢 0.退出"); system.out.println("請選擇業務"); scanner input = new scanner(system.in); int a = input.nextint(); switch (a) { case 0: { system.out.println("退出系統"); i = 101; } ; break; case 1: { system.out.println("添加電話本"); system.out.print("姓名："); scanner n = new scanner(system.in); string name = n.next(); system.out.print("性別："); scanner s = new scanner(system.in); string sex = s.next(); system.out.print("年齡："); scanner ag = new scanner(system.in); string age = ag.next(); system.out.print("電話："); scanner tel = new scanner(system.in); string telnum = tel.next(); system.out.print("qq："); scanner q = new scanner(system.in); string qq = q.next(); system.out.print("地址："); scanner add = new scanner(system.in); string address = add.next(); personarray[index] = new person(name, sex, age, telnum, qq, address); index = index + 1; } ; break; case 2: { system.out.println("刪除電話本"); system.out.println("需要刪除的姓名："); scanner name0 = new scanner(system.in); string namedel = name0.next(); for (int j = 0; j < index; j++) { if (namedel.equals(personarray[j].name) == true) { for (int n = j; n < index - 1; n++) { personarray[n] = personarray[n + 1]; } index = index - 1; break; } if (j == index - 1) { system.out.println("查無此人"); } } } ; break; case 3: { system.out.println("修改電話本"); system.out.println("需要修改的姓名："); scanner name00 = new scanner(system.in); string nameedit = name00.next(); for (int k = 0; k < index; k++) { if (nameedit.equals(personarray[k].name) == true) { system.out.print("姓名："); scanner xm1 = new scanner(system.in); string name1 = xm1.next(); system.out.print("性別："); scanner xb1 = new scanner(system.in); string sex1 = xb1.next(); system.out.print("年齡："); scanner nl1 = new scanner(system.in); string age1 = nl1.next(); system.out.print("電話："); scanner dh1 = new scanner(system.in); string telnum1 = dh1.next(); system.out.print("qq："); scanner q1 = new scanner(system.in); string qq1 = q1.next(); system.out.print("地址："); scanner dz1 = new scanner(system.in); string address1 = dz1.next(); personarray[k] = new person(name1, sex1, age1, telnum1, qq1, address1); break; } if (k == index - 1) { system.out.println("查無此人"); } } } ; break; case 4: { system.out.println("顯示所有電話本"); for (int l = 0; l < index; l++) { system.out.println(personarray[l].tostring()); } } ; break; case 5: { system.out.println("查詢電話本"); system.out.println("需要查詢的姓名："); scanner na = new scanner(system.in); string nameprint = na.next(); for (int m = 0; m < index; m++) { if (nameprint.equals(personarray[m].name) == true) { system.out.println(personarray[m].tostring()); break; } if (m == index - 1) { system.out.println("查無此人"); } } } ; break; default: { system.out.println("無此功能"); } ; break; } } public person(string name, string sex, string age, string telnum, string qq, string address) { this.name = name; this.sex = sex; this.age = age; this.telnum = telnum; this.qq = qq; this.address = address; } public string tostring() { return " [姓名=" + name + ", 性別=" + sex + ", 年齡=" + age + ", 電話=" + telnum + ",qq=" + qq + ", 地址=" + address + "]"; } |
下面是程序運行的結果：
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。
原文鏈接：http://blog.csdn.net/hpepm6_2/article/details/48245823
