java - Converting a hashmap into a JSON string -

i want convert hashmap json string send on wire. here code

public static void main(string []args)      throws jsonexception, jsonparseexception, jsonmappingexception, ioexception {      map<string,string> varmap = new mymap<string,string>();     varmap.put("var","123");     varmap.put("other_var","234");     gson gson = new gsonbuilder().create();     string jsonstring = gson.tojson(varmap);      jsonobject json = new jsonobject();     json.put("variable",jsonstring);     system.out.println("json " + json);  } 

the output

json {"variable":"{\"var\":\"123\",\"other_var\":\"234\"}"} 

which assume right thing, examples i've found dont include backslash in strng. understand backslash escapes double quotes , hence none of string replace method work replace backslash.

is there trick following output?

json {"variable":{"var":"123","other_var":"234"}} 

can custom serialization property used somehow not add backslashes?

this should give result want. you're json-encoding json-string , adding backslashes escape characters.

public static void main(string []args) throws jsonexception, jsonparseexception, jsonmappingexception, ioexception{      map<string, object> top = new hashmap<string, object>();      map<string, object> vars = new hashmap<string, object>();     vars.put("var","123");     vars.put("other_var","234");      top.put("variable", vars);      gson gson = new gsonbuilder().create();     string jsonstring = gson.tojson(top);     system.out.println("json " + json); }