BAEL-3987 (#9139)
* BAEL-3987 - Cast an int to an enum value * refactoring * code refactored * BAEL-3987 - Updated code snippets * bAEL-3987 - Fixed indentation
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package com.baeldung.inttoenum;
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import java.util.HashMap;
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import java.util.Map;
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public enum PizzaStatus {
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ORDERED(5),
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READY(2),
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DELIVERED(0);
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private int timeToDelivery;
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PizzaStatus(int timeToDelivery) {
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this.timeToDelivery = timeToDelivery;
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}
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public int getTimeToDelivery() {
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return timeToDelivery;
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}
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private static Map<Integer, PizzaStatus> timeToDeliveryToEnumValuesMapping = new HashMap<>();
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static {
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PizzaStatus[] pizzaStatuses = PizzaStatus.values();
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for (int pizzaStatusIndex = 0; pizzaStatusIndex < pizzaStatuses.length; pizzaStatusIndex++) {
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timeToDeliveryToEnumValuesMapping.put(
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pizzaStatuses[pizzaStatusIndex].getTimeToDelivery(),
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pizzaStatuses[pizzaStatusIndex]
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);
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}
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}
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public static PizzaStatus castIntToEnum(int timeToDelivery) {
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return timeToDeliveryToEnumValuesMapping.get(timeToDelivery);
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}
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}
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package com.baeldung.inttoenum;
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import org.junit.Test;
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import static org.junit.Assert.assertEquals;
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public class IntToEnumUnitTest {
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@Test
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public void whenIntToEnumUsingValuesMethod_thenReturnEnumObject() {
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int timeToDeliveryForOrderedPizzaStatus = 5;
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PizzaStatus[] pizzaStatuses = PizzaStatus.values();
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PizzaStatus pizzaOrderedStatus = null;
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for (int pizzaStatusIndex = 0; pizzaStatusIndex < pizzaStatuses.length; pizzaStatusIndex++) {
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if (pizzaStatuses[pizzaStatusIndex].getTimeToDelivery() == timeToDeliveryForOrderedPizzaStatus) {
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pizzaOrderedStatus = pizzaStatuses[pizzaStatusIndex];
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}
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}
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assertEquals(pizzaOrderedStatus, PizzaStatus.ORDERED);
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}
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@Test
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public void whenIntToEnumUsingMap_thenReturnEnumObject() {
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int timeToDeliveryForOrderedPizzaStatus = 5;
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assertEquals(PizzaStatus.castIntToEnum(timeToDeliveryForOrderedPizzaStatus), PizzaStatus.ORDERED);
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}
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}
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