It means that ClassA
instantiates ClassB
. The arrow represents that the constructor of ClassB
is called by ClassA
constructor in UML sequence diagram
-
10-03-2022 - |
Pregunta
what is the meaning of the following sequence diagram and exactly the constructor(that is represented as a create object)?
Solución 2
Otros consejos
The message's name "Class B()" is wrong : it should be "create".
Is that what confusing you ?
Chriss, hopefully you've figured it out by now. Please accept Cratylus's answer as it is correct.
Here is an example in Java:
Main.java
package com.example.umlquestion;
// (e.g. your application that makes and uses an instance of ClassA)
public class Main {
public Main() {
// this calls ClassA's constructor, which will then call ClassB's constructor
private ClassA instanceA = new ClassA();
// ...
}
}
ClassA.java
package com.example.umlquestion;
public class ClassA {
private ClassB instanceB;
public ClassA() {
instanceB = new ClassB();
// ...
}
// ...
}
ClassB.java
package com.example.umlquestion;
public class ClassB {
public ClassB() {
// ...
}
// ...
}
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