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| enum Action {ONE, TWO, THREE} | |
| // .......... | |
| Action a = ... | |
| switch (a) { | |
| case ONE: one(); break; | |
| case TWO: two(); break; | |
| case THREE: three(); break; | |
| default: throw new UnsupportedOperationException(String.format("Operation %s is not supported", a)); | |
| } |
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| enum Action {ONE, TWO, THREE} | |
| enum MyAction { | |
| FIRST { @Override public void action() { /* one */} }, | |
| SECOND { @Override public void action() { /* two */} }, | |
| THIRD { @Override public void action() { /* three */} }, | |
| public abstract void action(); | |
| } | |
| Map<Action, MyAction> actions = new EnumMap<>(Action.class); | |
| actions.put(Action.ONE, MyAction.FIRST); | |
| actions.put(Action.TWO, MyAction.SECOND); | |
| actions.put(Action.THREE, MyAction.THIRD); | |
| //Usage | |
| Optional.ofNullable(actions.get(a)) | |
| .orElseThrow(() -> throw new UnsupportedOperationException(String.format("Operation %s is not supported", a))) | |
| .action(); |
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| enum Action { | |
| ONE { @Override public void action() { /* one */} }, | |
| TWO { @Override public void action() { /* two */} }, | |
| THREE { @Override public void action() { /* three */} }, | |
| public abstract void action(); | |
| } | |
| Action a = ... | |
| a.action(); |
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| private static int ONE = 1; | |
| private static int TWO = 2; | |
| private static int THREE = 3; | |
| // .......... | |
| switch (c) { | |
| case ONE: one(); break; | |
| case TWO: two(); break; | |
| case THREE: three(); break; | |
| default: throw new UnsupportedOperationException(String.format("Operation %d is not supported", c)); | |
| } | |
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| switch (c) { | |
| case 1: one(); break; | |
| case 2: two(); break; | |
| case 3: three(); break; | |
| default: throw new UnsupportedOperationException(String.format("Operation %d is not supported", c)); | |
| } | |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| enum Action {ONE, TWO, THREE} | |
| enum MyAction { | |
| ONE { @Override public void action() { /* one */} }, | |
| TWO { @Override public void action() { /* two */} }, | |
| THREE { @Override public void action() { /* three */} }, | |
| public abstract void action(); | |
| } | |
| Action a = ... | |
| MyAction.valueOf(a.name()).action(); |
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