Validate JSON data

By using gson, we can validate, whether given string is valid JSON or not.

import com.google.gson.*;

public class JsonValidate {
    private static final Gson gson = new Gson();
    
    static boolean isValidJSON(String str){
        try {
          gson.fromJson(str, Object.class);
          return true;
        }
        catch(com.google.gson.JsonSyntaxException ex) {
          return false;
        }
    }
    
    public static void main(String args[]){
        String validStr = "{\"org\":[{\"name\":\"Honeywell\",\"yrsOfExperience\":2.2},"
                + "{\"name\":\"IBM\",\"yrsOfExperience\":1.8}],\"firstName\":\"Krishna\","
                + "\"lastName\":\"Hari\",\"salary\":80000.0}";

        String inValidStr = "{\"org\":[{\"name\":\"Honeywell\",\"yrsOfExperience\":2.2},"
                + "{\"name\":\"IBM\",\"yrsOfExperience\":1.8}],\"firstName\":\"Krishna\","
                + "\"lastName\":\"Hari\",\"salary\"}";

        System.out.println(isValidJSON(validStr));
        System.out.println(isValidJSON(inValidStr));
    }
}

Output

true
false

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