[Json] Convert JSON Object to String javascript

you can user browser native function JSON.stringify to do this
var foo = {};
foo.bar = "new property";
foo.baz = 3;
var jsonString = JSON.stringify(foo);

[Java] Notes for Json in Java

在java中操作json，可從Json in java 下載source code，用eclipse重新build成jar檔。

Reference:
Json in Java
JSON in JAVA 的簡單程式範例