Question

Using google’s json parser, i test file’s content to see if it can be parsed:

...
FileReader fullPathToAndNameOfFile = new FileReader(file);
isJson(fullPathToAndNameOfFile);
...

private static boolean isJson(FileReader f) {

    try {
        parser.parse(f);
    } catch (Exception e) {
        return false;
    }

    return true;
}

The problem is .. the following format validates without errors:

a:12
b:27
c:Mike

Which, of course is not a valid JSON format.

Why is this?

Answer 1

I am not able to reproduce the poblem with below code.

private static boolean isJson(FileReader f) {
try{
     JsonElement json = new JsonParser().parse(f);
   }
catch (Exception e) {
     return false;
   }
return true;
}

Inside main

parser p = new parser();
String file = "C:\\Users\\RanRag\\test.txt";
FileReader fullPathToAndNameOfFile = new FileReader(file);

if(p.isJson(fullPathToAndNameOfFile))
   System.out.println("valid");
else
   System.out.println("invalid");

Output for your given file contents = invalid.

If I change the file content to valid json. For eg:

{ "name": "Simon" }

Output = valid