UML 类图的关系

public class ClassA {

    private ClassB  bVar;

}

public class ClassB {

  //...

}

public class ClassA {

    private ClassB  bVar;

}

public class ClassB {

    private ClassA aVar;
    // ...

}

public class ClassH {
    
    private ClassH  hVar;

}

public class Computer {
    private  CPU  cpu;
     //....
     
}

class CPU  {
    //...
    
}

public class Database {
    
    private ArrayList<Table>  tableList;

}


class Table {
    
    
}

public class ClassX {
    
    public void funx(ClassY  yObj){};

}

class ClassY {
    
}