Fixed descriptions in code.
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@ -1,12 +1,24 @@
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package com.iluwatar.value.object;
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package com.iluwatar.value.object;
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/**
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/**
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* App Class.
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* A Value Object are objects which follow value semantics rather than reference semantics. This
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* means value objects' equality are not based on identity. Two value objects are equal when they
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* have the same value, not necessarily being the same object..
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*
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* Value Objects must override equals(), hashCode() to check the equality with values.
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* Value Objects should be immutable so declare members final.
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* Obtain instances by static factory methods.
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* The elements of the state must be other values, including primitive types.
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* Provide methods, typically simple getters, to get the elements of the state.
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* A Value Object must check equality with equals() not ==
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*
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* For more specific and strict rules to implement value objects check the rules from Stephen
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* Colebourne's term VALJO : http://blog.joda.org/2014/03/valjos-value-java-objects.html
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*
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*/
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*/
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public class App {
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public class App {
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/**
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/**
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* main method.
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*
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* A Value Object must check equality with equals() not == <br>
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* This practice creates three HeroStats(Value object) and checks equality between those.
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* This practice creates three HeroStats(Value object) and checks equality between those.
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*/
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*/
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public static void main(String[] args) {
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public static void main(String[] args) {
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@ -15,7 +27,7 @@ public class App {
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HeroStat statC = HeroStat.valueOf(5, 1, 8);
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HeroStat statC = HeroStat.valueOf(5, 1, 8);
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System.out.println(statA.toString());
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System.out.println(statA.toString());
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System.out.println("Is statA and statB equal : " + statA.equals(statB));
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System.out.println("Is statA and statB equal : " + statA.equals(statB));
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System.out.println("Is statA and statC equal : " + statA.equals(statC));
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System.out.println("Is statA and statC equal : " + statA.equals(statC));
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}
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}
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@ -1,13 +1,7 @@
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package com.iluwatar.value.object;
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package com.iluwatar.value.object;
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/**
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/**
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* HeroStat is a Value Object. following rules are from Stephen Colebourne's term VALJO(not the
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* HeroStat is a value object
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* entire rule set) from : http://blog.joda.org/2014/03/valjos-value-java-objects.html<br>
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* Value Objects must override equals(), hashCode() to check the equality with values. <br>
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* Value Objects should be immutable so declare members final. Obtain instances by static factory
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* methods. <br>
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* The elements of the state must be other values, including primitive types.<br>
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* Provide methods, typically simple getters, to get the elements of the state.<br>
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*
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*
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* {@link http://docs.oracle.com/javase/8/docs/api/java/lang/doc-files/ValueBased.html}
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* {@link http://docs.oracle.com/javase/8/docs/api/java/lang/doc-files/ValueBased.html}
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*/
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*/
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