标准格式包含: 私有属性 无参构造 有参构造 setter 和getter 需求中的方法 需求一: 员工类Employee 属性:姓名name,工号id,工资salary 行为:显示所有成员信息的方法show() 需求二: 动物类Animal 属性:姓名name,年龄age 行为:吃饭
1 // 员工类 2 3 public class Employee { 4 private String name; 5 private int id; 6 private double salary; 7 8 public void show() { 9 System.out.println(name+"\t"+id+"\t"+salary); 10 } 11 public Employee() { 12 13 } 14 public Employee(String name, int id, double salary) { 15 this.name = name; 16 this.id = id; 17 this.salary = salary; 18 } 19 public String getName() { 20 return name; 21 } 22 public void setName(String name) { 23 this.name = name; 24 } 25 public int getId() { 26 return id; 27 } 28 public void setId(int id) { 29 this.id = id; 30 } 31 public double getSalary() { 32 return salary; 33 } 34 public void setSalary(double salary) { 35 this.salary = salary; 36 } 37 }
1 // 动物类 2 public class Animal { 3 private String name; 4 private int age; 5 6 public Animal() { 7 8 } 9 public Animal(String name, int age) { 10 this.name = name; 11 this.age = age; 12 } 13 public String getName() { 14 return name; 15 } 16 public void setName(String name) { 17 this.name = name; 18 } 19 public int getAge() { 20 return age; 21 } 22 public void setAge(int age) { 23 this.age = age; 24 } 25 public void eat() { 26 System.out.println("吃饭"); 27 } 28 public void sleep() { 29 System.out.println("睡觉"); 30 } 31 }
1 //人类 2 3 public class Person { 4 private String name; 5 private int age; 6 private String gender; 7 8 public Person() { 9 10 } 11 public Person(String name, int age, String gender) { 12 this.name = name; 13 this.age = age; 14 this.gender = gender; 15 } 16 17 public String getName() { 18 return name; 19 } 20 21 public void setName(String name) { 22 this.name = name; 23 } 24 25 public int getAge() { 26 return age; 27 } 28 29 public void setAge(int age) { 30 this.age = age; 31 } 32 33 public String getGender() { 34 return gender; 35 } 36 37 public void setGender(String gender) { 38 this.gender = gender; 39 } 40 41 public void study() { 42 System.out.println("学习"); 43 } 44 45 public void sleep() { 46 System.out.println("睡觉"); 47 } 48 }
1 //测试类 2 3 public class TestA { 4 public static void main(String[] args) { 5 6 Animal a = new Animal("藏獒",50); 7 System.out.println(a.getName()); 8 System.out.println(a.getAge()); 9 a.eat(); 10 a.sleep(); 11 System.out.println("============================"); 12 Employee e = new Employee("张三",20190316,20); 13 e.show(); 14 System.out.println("============================"); 15 Person p = new Person("李四",30,"男"); 16 System.out.println(p.getName()); 17 System.out.println(p.getAge()); 18 System.out.println(p.getGender()); 19 p.study(); 20 p.sleep(); 21 } 22 }
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