How to merge javax.json.JsonObject instances 📎
javax.json.JsonObject instances requires copying their contents into a single JsonObjectBuilder instance:
@Test
public void merge() {
JsonObject dev = Json.createObjectBuilder().
add("developer", "duke").
build();
JsonObject lang = Json.createObjectBuilder().
add("language", "java").
build();
JsonObjectBuilder result = Json.createObjectBuilder();
dev.entrySet().forEach(s -> result.add(s.getKey(), s.getValue()));
lang.entrySet().forEach(s -> result.add(s.getKey(), s.getValue()));
JsonObject merged = result.build();
assertThat(merged.getString("developer"), is("duke"));
assertThat(merged.getString("language"), is("java"));
}
Adding additional attribute to a JsonObject instance works similarly.
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