Serialize and Deserialize Primitives with GSON

GSON can serialize or deserialize any primitive type into JSON representation. Below you can find a list of all primitive types. First you can find how to serialize primitive types into their JSON representation and last you find how to deserialize the JSON string into their primitieve type.

Serialize Primitives Types

We can serialize any primitive type into their JSON representation.

Gson gson = new GsonBuilder().create();
gson.toJson((byte)2);           // => 2
gson.toJson('A');               // => "A"
gson.toJson("abc");             // => "abc"
gson.toJson((short)2);          // => 2
gson.toJson(1);                 // => 1
gson.toJson(555000333000L);     // => 555000333000
gson.toJson(3.14d);             // => 3.14
gson.toJson(13.99f);            // => 13.99
gson.toJson(true);              // => true
int[] values = {1, 2, 3};
gson.toJson(values);            // => [1,2,3]

Deserialize Primitives Types

We can deserialize the JSON String into their primitive type.

byte byteResult = gson.fromJson("2", byte.class);
char charResult = gson.fromJson("A", char.class);
String stringResult = gson.fromJson("abc", String.class);
Short shortResult = gson.fromJson("2", Short.class);
int intResult = gson.fromJson("1", int.class);
Integer integerResult = gson.fromJson("1", Integer.class);
Long longResult = gson.fromJson("555000333000", Long.class);
Double doubleResult = gson.fromJson("3.14", Double.class);
Float floatResult = gson.fromJson("13.99", Float.class);
Boolean booleanResult = gson.fromJson("true", Boolean.class);
int[] intArrayResult = gson.fromJson("[1,2,3]", int[].class);