JAVA作业一

public class java1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Dog dog =new Dog("大黄","黄",10);
            dog.tell();

    }

}

class Dog{
    private String name;
    private String colour;
    private int age;
    public Dog(String name,String colour,int age){
          this.setName(name);
          this.setColour(colour);
          this.setAge(age);
         }

    public void tell(){
          System.out.println("名字："+getName()+",颜色:"+getColour()+",年龄:"+getAge());
    }
     public String getName(){
          return name;
         }
         public void setName(String n){
          name = n;
         }

         public String getColour(){
          return colour;
         }
         public void setColour(String c){
          colour = c;
         }

         public int getAge(){
          return age;
         }
         public void setAge(int a){
             age = a;
         }

}

public class Java2 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub

          User user1=new User("李四","131415");
          user1.print();
          User user2=new User("张三","215451");
          user2.print();
          new User().count();
         }
        }

        class User
        {
         private String name;
         private String password;
         private static int count;//count用于统计个数必须用static 声明成全局属性
         public User(){
          count++;
         }
         public User(String name){
          this.name=name;
          count++;
         }
         public User(String name,String password){
          this.name=name;
          this.password=password;
          count++;
         }
         public String getName(){
          return name;
         }
         public void setName(String name){
          this.name=name;
         }
         public String getPassword(){
          return password;
         }
         public void setPassword(String password){
          this.password=password;
         }
         public void print(){
          System.out.println("用户名："+name+"\t"+"口令："+password);
         }
         public void count(){
          System.out.println("用户个数："+(count-1));
         }
    }