Created
December 29, 2022 12:37
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package org.example.jplayground; | |
import java.util.List; | |
import java.util.stream.Collectors; | |
public class ToJsonProblem { | |
interface SerializableValue<X> { | |
X serialize(); | |
} | |
static class SerializableLong implements SerializableValue<String> { | |
final Long value; | |
public SerializableLong(Long value) { | |
this.value = value; | |
} | |
@Override | |
public String serialize() { | |
return this.value.toString(); | |
} | |
} | |
static class SerializableBoolean implements SerializableValue<String> { | |
final Boolean value; | |
public SerializableBoolean(Boolean value) { | |
this.value = value; | |
} | |
@Override | |
public String serialize() { | |
return this.value.toString(); | |
} | |
} | |
static class SerializableList implements SerializableValue<String> { | |
final List<SerializableValue<String>> value; | |
public SerializableList(List<SerializableValue<String>> value) { | |
this.value = value; | |
} | |
@Override | |
public String serialize() { | |
return new StringBuilder() | |
.append("[") | |
.append(value.stream().map(SerializableValue::serialize).collect(Collectors.joining(", "))) | |
.append("]") | |
.toString(); | |
} | |
} | |
public static void main(String[] args) { | |
var list = new SerializableList( | |
List.of( | |
new SerializableLong(1L), | |
new SerializableLong(2L), | |
new SerializableLong(3L))); | |
System.out.println( | |
list.serialize() | |
); | |
} | |
} |
DominikMostek
commented
Dec 30, 2022
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