us.fihgu.toolbox.json

Class JsonUtils

java.lang.Object

us.fihgu.toolbox.json.JsonUtils

public class JsonUtils
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
JsonUtils()

Method Summary

Modifier and Type	Method and Description
static <T> T	fromFile(java.io.File file, java.lang.Class<T> type) Read a json object from the given file, and try to cast the read object to the given class.
static <T> T	fromJson(java.lang.String json, java.lang.Class<T> type) See Gson.fromJson(String, Class)
static void	toFile(java.io.File file, java.lang.Object obj) Write the given object to the given file.
static java.lang.String	toJson(java.lang.Object obj)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JsonUtils

public JsonUtils()

Method Detail

fromFile

public static <T> T fromFile(java.io.File file,
                             java.lang.Class<T> type)

Read a json object from the given file, and try to cast the read object to the given class.

Returns:

the read object, or null if the file doesn't exist.

Throws:

com.google.gson.JsonSyntaxException - when there is a syntax error in this json file

toFile

public static void toFile(java.io.File file,
                          java.lang.Object obj)

Write the given object to the given file.
Note: If file already contain data, the old data will be discarded.

toJson

public static java.lang.String toJson(java.lang.Object obj)

Returns:

A json string representation of this object.

fromJson

public static <T> T fromJson(java.lang.String json,
                             java.lang.Class<T> type)

See Gson.fromJson(String, Class)