41 lines
916 B
Plaintext
41 lines
916 B
Plaintext
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@startuml
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package com.iluwatar.nullobject {
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class App {
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+ App()
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+ main(args : String[]) {static}
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}
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interface Node {
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+ getLeft() : Node {abstract}
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+ getName() : String {abstract}
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+ getRight() : Node {abstract}
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+ getTreeSize() : int {abstract}
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+ walk() {abstract}
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}
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class NodeImpl {
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- LOGGER : Logger {static}
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- left : Node
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- name : String
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- right : Node
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+ NodeImpl(name : String, left : Node, right : Node)
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+ getLeft() : Node
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+ getName() : String
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+ getRight() : Node
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+ getTreeSize() : int
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+ walk()
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}
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class NullNode {
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- instance : NullNode {static}
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- NullNode()
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+ getInstance() : NullNode {static}
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+ getLeft() : Node
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+ getName() : String
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+ getRight() : Node
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+ getTreeSize() : int
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+ walk()
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}
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}
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NullNode --> "-instance" NullNode
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NodeImpl --> "-left" Node
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NodeImpl ..|> Node
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NullNode ..|> Node
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@enduml
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