Brief generic class definition.

Package Penalty for com.aaa.test;
 / * 
 * generic role: 
    A: enhance the security of the program (in the collection of generic use) 
    B: Transfer will run encounter to compile 
    C: omitted strong turn trouble type 
    D: to improve the reusability of code, the code that implements a common package 

 * • generic method 
    - the method in the generic definition of 
    - format: method name return type (generic type public <generic type> .) 
 * 
 * / 

Import of java.util.ArrayList;
 Import java.util.List; 

public  class Demo11 <E> {
     Private  int ID;
     Private String name;
     / ** 
     * @return The ID
      * / 
    public  int getId () {
         return the above mentioned id; 
    }
    /**
     * @param id the id to set
     */
    public void setId(int id) {
        this.id = id;
    }
    /**
     * @return the name
     */
    public String getName() {
        return name;
    }
    /**
     * @param name the name to set
     */
    public void setName(String name) {
        this.name = name;
    }
    /* (non-Javadoc)
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        return "Demo11 [id=" + id + ", name=" + name + "]";
    }
    
    public static void main(String[] args) {
        Demo11<Object> demo11 = new Demo11<>();
        
        //使用泛型  添加数据快捷  
        List<Object>list=new ArrayList<>();
        list.add(4654);
        list.add("哈哈");
        
        System.out.println(list);
    }
    
    

}

Second, the generic definition of the interface

Package com.aaa.test;
 / * 
 * generic defined in the interface 
    - is defined in the generic interface 
    - Format: public interface interface name <... generic types. 1> 
    
    public interface FanXingDingYiJieKou <E> { 
            int the Add (); 
} 
 * 
 * generic implementation of the interface 
 * 
 * / 
public  class Demo10 <E> the implements FanXingDingYiJieKou <E> { 

    @Override 
    public  int the Add (E E) {
         // the TODO Auto-Generated Method Stub 
        return 0 ; 
    } 
    public  static  void main (String [ ] args) { 
        Demo10 <Object> = Dnew Demo10<>();
        
        // 前父后子
        FanXingDingYiJieKou<Object> f = new Demo10<>();
         d.add(1);
         f.add(1);
        
    
        
    }

}