public JsonToken nextToken() {

        int c = buffer.read();
        while (c != -1 && Character.isWhitespace(c)) {
            c = buffer.read();
        }
        if (c == -1) {
            return new JsonToken(JsonTokenType.END_OF_FILE, "<eof>");
        }

        switch (c) {
            case '{':
                return new JsonToken(JsonTokenType.BEGIN_OBJECT, "{");
            case '}':
                return new JsonToken(JsonTokenType.END_OBJECT, "}");
            case '[':
                return new JsonToken(JsonTokenType.BEGIN_ARRAY, "[");
            case ']':
                return new JsonToken(JsonTokenType.END_ARRAY, "]");
            case '(':
                return new JsonToken(JsonTokenType.LEFT_PAREN, "(");
            case ')':
                return new JsonToken(JsonTokenType.RIGHT_PAREN, ")");
            case ':':
                return new JsonToken(JsonTokenType.COLON, ":");
            case ',':
                return new JsonToken(JsonTokenType.COMMA, ",");
            case '\'':
            case '"':
                return scanString((char) c);
            case '/':
                return scanRegularExpression();
            default:
                if (c == '-' || Character.isDigit(c)) {
                    return scanNumber((char) c);
                } else if (c == '$' || c == '_' || Character.isLetter(c)) {
                    return scanUnquotedString((char) c);
                } else {
                    int position = buffer.getPosition();
                    buffer.unread(c);
                    throw new JsonParseException("Invalid JSON input. Position: %d. Character: '%c'.", position, c);
                }
        }
    }
public JsonToken nextToken() {

        int c = buffer.read();
        while (c != -1 && Character.isWhitespace(c)) {
            c = buffer.read();
        }
        if (c == -1) {
            return new JsonToken(JsonTokenType.END_OF_FILE, "<eof>");
        }

        switch (c) {
            case '{':
                return new JsonToken(JsonTokenType.BEGIN_OBJECT, "{");
            case '}':
                return new JsonToken(JsonTokenType.END_OBJECT, "}");
            case '[':
                return new JsonToken(JsonTokenType.BEGIN_ARRAY, "[");
            case ']':
                return new JsonToken(JsonTokenType.END_ARRAY, "]");
            case '(':
                return new JsonToken(JsonTokenType.LEFT_PAREN, "(");
            case ')':
                return new JsonToken(JsonTokenType.RIGHT_PAREN, ")");
            case ':':
                return new JsonToken(JsonTokenType.COLON, ":");
            case ',':
                return new JsonToken(JsonTokenType.COMMA, ",");
            case '\'':
            case '"':
                return scanString((char) c);
            case '/':
                return scanRegularExpression();
            default:
                if (c == '-' || Character.isDigit(c)) {
                    return scanNumber((char) c);
                } else if (c == '$' || c == '_' || Character.isLetter(c)) {
                    return scanUnquotedString((char) c);
                } else {
                    int position = buffer.getPosition();
                    buffer.unread(c);
                    throw new JsonParseException("Invalid JSON input. Position: %d. Character: '%c'.", position, c);
                }
        }
    }
public JsonToken nextToken ( ) { int c = buffer . read ( ) ; while ( c != - 1 && Character . isWhitespace ( c ) ) { c = buffer . read ( ) ; } if ( c == - 1 ) { return new JsonToken ( JsonTokenType . END_OF_FILE , "<eof>" ) ; } switch ( c ) { case ' ' : return new JsonToken ( JsonTokenType . BEGIN_OBJECT , "{" ) ; case ' ' : return new JsonToken ( JsonTokenType . END_OBJECT , "}" ) ; case ' ' : return new JsonToken ( JsonTokenType . BEGIN_ARRAY , "[" ) ; case ' ' : return new JsonToken ( JsonTokenType . END_ARRAY , "]" ) ; case ' ' : return new JsonToken ( JsonTokenType . LEFT_PAREN , "(" ) ; case ' ' : return new JsonToken ( JsonTokenType . RIGHT_PAREN , ")" ) ; case ' ' : return new JsonToken ( JsonTokenType . COLON , ":" ) ; case ' ' : return new JsonToken ( JsonTokenType . COMMA , "," ) ; case ' ' : case ' ' : return scanString ( ( char ) c ) ; case ' ' : return scanRegularExpression ( ) ; default : if ( c == ' ' || Character . isDigit ( c ) ) { return scanNumber ( ( char ) c ) ; } else if ( c == ' ' || c == ' ' || Character . isLetter ( c ) ) { return scanUnquotedString ( ( char ) c ) ; } else { int position = buffer . getPosition ( ) ; buffer . unread ( c ) ; throw new JsonParseException ( "Invalid JSON input. Position: %d. Character: '%c'." , position , c ) ; } } }
Finds and returns the next complete token from this scanner. If scanner reached the end of the source, it will return a token with
{@code JSONTokenType.END_OF_FILE} type.

@return The next token.
@throws JsonParseException if source is invalid.
Finds and returns the next complete token from this scanner . If scanner reached the end of the source it will return a token with { @code JSONTokenType . END_OF_FILE } type .