CODEWITHSUNDEEP
javaumlimplementationclass-diagram
James Rich
James Rich

Reputation: 169

Implementation of class diagrams of java classes

I wanted to know how i can design a uml class diagram or uml diagrams in General of These Java classes:

public class A{
 private A parent;
 private B[] b = new B[3];
 protected int i;
 private Vector<C> c; //container for objects of class C
 }

 public class B {

 }

 public class C {
 private A owner;
 public A getOwner() {return owner;}
 }

Maybe someone who has the Software can post an example how an class diagram in uml can look lie with These Java classes.

Upvotes: 0

Views: 3072

Answers (1)

user2511414
user2511414

Reputation:

Something like this?
enter image description here
EDIT0: and a simple object diagram sample
enter image description here

Edit1:
explanation: in object diagram you should specify the value of each variable, here the i=1990 is an example, it could be any number. 

A a=new new A();
a.setI(1990);

as you see, there are two instances of class A named a and a1.

A a=new A();
A a1=new A();

The a1 reference has no value for variable c, so it's null.

class B doesn't have anything(attribute) here.
in class A, the b variable is a array of class B, so a variable has two B references(b0,b1) and a null value.

B b0=new B();
B b1=new B();
a.setB(new B[]{b0,b1,null});
////
B b2=new B();
a1.setB(new B[]{null,null,b2});

and about the :C and :Vector<C>, why doesn't it have a name lie a1 or b0? because there is no need for pointer(reference) for the class, so it doesn't need a pointer, in other word an object from Vector<> and two objects from C are created and passed to the host class A.

a.setC(new Vector<C>());
a.getC().put(new C(a));
a.getC().put(new C(a));

and about the owner in C class, assume that the owner is set during the object creation by constructor, or has set by a indirect reference (using A.c).

I hope I could give some hand dude. Software: UMLet

Upvotes: 1

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