抽象工廠模式（Abstract Factory）：提供一個創建一系列相關或相互依賴對象的接口，而無需指定它們具體的類。

package designMode.abstractFactory;

class User {
    private int id;
    private String name;
    
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        
 
return name;
    }
    public void setName(String name) {
        this.name = name;
    }
}

package designMode.abstractFactory;

class Dept {
    
    private int id;

    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
}

package designMode.abstractFactory;

 
interface IUser {
    
    void insert(User user);
    
    User getUser(int id);
}

package designMode.abstractFactory;

interface IDept {
    
    void insertDept(Dept dept);
    
    Dept getDept(int id);
}

package designMode.abstractFactory;

class OracleUser implements IUser{

    @Override
    
 
public void insert(User user) {
        System.out.println("在Oracle數據庫中給user表新增一條記錄！");
    }

    @Override
    public User getUser(int id) {
        System.out.println("在Oracle數據庫中根據用戶id得到user表一條記錄！");
        return null;
    }
    
}

package designMode.abstractFactory;

class OracleDept implements IDept{

    @Override
    public void insertDept(Dept dept) {
        System.out.println("在Oracle數據庫中給dept表新增一條記錄！");
    }

    @Override
    public Dept getDept(int id) {
        System.out.println("在Oracle數據庫中根據id獲取dept表中的一條記錄！");
        return null;
    }

}

package designMode.abstractFactory;

class MysqlUser implements IUser{

    @Override
    public void insert(User user) {
        System.out.println("在Mysql數據庫中給user表新增一條記錄！");
        
    }

    @Override
    public User getUser(int id) {
        System.out.println("在Mysql數據庫中根據用戶id得到user表的一條記錄！");
        return null;
    }

}

package designMode.abstractFactory;

class MysqlDept implements IDept{

    @Override
    public void insertDept(Dept dept) {
        System.out.println("在Mysql數據庫中給dept表新增一條記錄！");
    }

    @Override
    public Dept getDept(int id) {
        System.out.println("在Mysql數據庫中根據id獲取dept表的一條記錄！");
        return null;
    }

}

package designMode.abstractFactory;

interface IFactory {
    
    IUser createUser();
    
    IDept createDept();
}

package designMode.abstractFactory;

class OracleFactory implements IFactory{

    @Override
    public IUser createUser() {
        return new OracleUser();
    }

    @Override
    public IDept createDept() {
        return new OracleDept();
    }

}

package designMode.abstractFactory;

class MysqlFactory implements IFactory{

    @Override
    public IUser createUser() {
        return new MysqlUser();
    }

    @Override
    public IDept createDept() {
        return new MysqlDept();
    }

}

package designMode.abstractFactory;

class Test {
    public static void main(String[] args) {
        User user = new User();
        Dept dept = new Dept();
      //IFactory factory = new OracleFactory();
        IFactory factory = new MysqlFactory();
        IUser iu = factory.createUser();
        iu.insert(user);
        iu.getUser(1);
        IDept id = factory.createDept();
        id.insertDept(dept);
        id.getDept(1);
    }
}

23種設計模式之抽象工廠模式