simple gson example

gistfile1.txt

package serialization;

import com.google.gson.Gson;
import java.io.*;

class Program {

    public static void main(String[] args) throws FileNotFoundException, IOException {

        Gson gson = new Gson();
        gson.toJson(1);
        gson.toJson("abcd");
        gson.toJson(new Long(10));
        int[] values = {1, 2, 3, 4, 5};
        String s = gson.toJson(values);
        System.out.println(s);

        int a = gson.fromJson("1", int.class);
        Integer b = gson.fromJson("1", Integer.class);
        Long c = gson.fromJson("1", Long.class);
        Boolean d = gson.fromJson("false", Boolean.class);
        String e = gson.fromJson("\"abc\"", String.class);

        String path = "C:\\1\\1.txt";
        FileOutputStream outputStream;

        try {
            outputStream = new FileOutputStream(path);
            outputStream.write(s.getBytes());
            outputStream.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }

        FileInputStream fis = new FileInputStream(path);
        InputStreamReader isr = new InputStreamReader(fis);
        BufferedReader bufferedReader = new BufferedReader(isr);
        StringBuilder sb = new StringBuilder();
        String line;
        while ((line = bufferedReader.readLine()) != null) {
            sb.append(line);
        }

        String json = sb.toString();
        System.out.println(json);
        gson = new Gson();
        int[] result = gson.fromJson(json, int[].class);
        System.out.println(result[2]);

        Runtime r = Runtime.getRuntime();
        r.exec("cmd /c " + path);
        
    }
}