标签:name System 学生 Student println 信息管理系统 sex out
1 package work_student_system; 2 3 public class Student { 4 5 private String name; 6 private String sex; 7 private int age; 8 9 public Student() { 10 11 } 12 13 public Student(String name, String sex, int age) { 14 this.name = name; 15 this.sex = sex; 16 this.age = age; 17 } 18 19 public String getName() { 20 return name; 21 } 22 23 public void setName(String name) { 24 this.name = name; 25 } 26 27 public String getSex() { 28 return sex; 29 } 30 31 public void setSex(String sex) { 32 this.sex = sex; 33 } 34 35 public int getAge() { 36 return age; 37 } 38 39 public void setAge(int age) { 40 this.age = age; 41 } 42 43 @Override 44 public String toString() { 45 return "Student [name=" + name + ", sex=" + sex + ", age=" + age + "]"; 46 } 47 48 @Override 49 public int hashCode() { 50 final int prime = 31; 51 int result = 1; 52 result = prime * result + ((name == null) ? 0 : name.hashCode()); 53 return result; 54 } 55 56 @Override 57 public boolean equals(Object obj) { 58 if (this == obj) 59 return true; 60 if (obj == null) 61 return false; 62 if (getClass() != obj.getClass()) 63 return false; 64 Student other = (Student) obj; 65 if (name == null) { 66 if (other.name != null) 67 return false; 68 } else if (!name.equals(other.name)) 69 return false; 70 return true; 71 } 72 }
1 package work_student_system; 2 3 import java.util.ArrayList; 4 5 public class Studentmanager { 6 7 private ArrayList<Student> list = new ArrayList<Student>(); 8 9 public void add(Student student) { 10 list.add(student); 11 } 12 13 public void showAll() { 14 System.out.println(); 15 System.out.println("学生信息列表:"); 16 Student student; 17 for(Object obj : list) { 18 student=(Student)obj; 19 System.out.println(student); 20 21 } 22 } 23 24 public Student find(String name) { 25 Student s = new Student(); 26 s.setName(name); 27 28 int index = list.indexOf(s); 29 30 if(index == -1) { 31 return null; 32 }else { 33 list.remove(index); 34 return (Student)list.get(index); 35 } 36 } 37 38 public Student set(String name,String sex,int age) { 39 Student s = new Student(); 40 s.setName(name); 41 s.setSex(sex); 42 s.setAge(age); 43 44 int index = list.indexOf(s); 45 list.set(index, s); 46 return (Student)list.get(index); 47 } 48 }
1 package work_student_system; 2 3 import java.util.Scanner; 4 5 public class Test_student { 6 7 public static void main(String[] args) { 8 9 Scanner input = new Scanner(System.in); 10 11 int n; 12 String name; 13 String sex; 14 int age; 15 Student student; 16 String name0; 17 18 String u; 19 String p; 20 21 System.out.println("欢迎使用学生信息管理系统"); 22 Studentmanager s =new Studentmanager(); 23 24 while(true) { 25 System.out.println(); 26 System.out.println("1.添加学生"); 27 System.out.println("2.查询全部学生"); 28 System.out.println("3.删除学生"); 29 System.out.println("4.修改学生信息"); 30 System.out.println("0.退出"); 31 System.out.println(); 32 System.out.print("请选择:"); 33 n= input.nextInt(); 34 35 switch(n) { 36 case 1: 37 System.out.println(); 38 System.out.print("请输入学生姓名:"); 39 name = input.next(); 40 System.out.print("请输入学生性别:"); 41 sex = input.next(); 42 System.out.print("请输入学生年龄:"); 43 age = input.nextInt(); 44 System.out.println(); 45 System.out.println("添加的学生信息为:[姓名:"+name+",性别:"+sex+",年龄:"+age+"]"); 46 47 student=new Student(name,sex,age); 48 s.add(student); 49 break; 50 case 2: 51 s.showAll(); 52 break; 53 case 3: 54 System.out.println(); 55 System.out.print("请输入要删除的学生姓名:"); 56 name0 = input.next(); 57 58 Student s1 = s.find(name0); 59 60 if(s1==null) { 61 System.out.println("没有找到"); 62 }else { 63 System.out.println("删除成功"); 64 } 65 break; 66 case 4: 67 System.out.println(); 68 System.out.print("请输入学生姓名:"); 69 name = input.next(); 70 System.out.print("请输入学生性别:"); 71 sex = input.next(); 72 System.out.print("请输入学生年龄:"); 73 age = input.nextInt(); 74 System.out.println(); 75 s.set(name, sex, age); 76 System.out.println("修改成功!学生信息为:[姓名:"+name+",性别:"+sex+",年龄:"+age+"]"); 77 break; 78 case 0: 79 System.out.println("程序结束!感谢使用。"); 80 break; 81 } 82 break; 83 } 84 } 85 }
标签:name,System,学生,Student,println,信息管理系统,sex,out 来源: https://www.cnblogs.com/wangsihui/p/11944984.html
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