Method nextBoolean

src/main/java/com/google/gson/stream/JsonReader.java:477–494

Returns the JsonToken#BOOLEAN boolean value of the next token, consuming it. @throws IllegalStateException if the next token is not a boolean or if this reader is closed.

()

   *     this reader is closed.
   */
  public boolean nextBoolean() throws IOException {
    quickPeek();
    if (value == null || token == JsonToken.STRING) {
      throw new IllegalStateException("Expected a boolean but was " + peek());
    }

    boolean result;
    if (value.equalsIgnoreCase("true")) {
      result = true;
    } else if (value.equalsIgnoreCase("false")) {
      result = false;
    } else {
      throw new IllegalStateException("Not a boolean: " + value);
    }

    advance();
    return result;
  }

  /**
   * Consumes the next token from the JSON stream and asserts that it is a