Алексей

class Test {
    public static void main(String[] args) {
        LongHolder holder = new LongHolder(0L);
        System.out.println(holder);
        updateValue(holder, 150L);
        System.out.println(holder);
    }

    private static void updateValue(LongHolder holder, Long newValue) {
        holder.setValue(newValue);
    }

    private static class LongHolder{

        private Long value;

        public LongHolder(Long value) {
            this.value = value;
        }

        public Long getValue() {
            return value;
        }

        public void setValue(Long value) {
            this.value = value;
        }

        @Override
        public String toString() {
            return "LongHolder{" +
                    "value=" + value +
                    '}';
        }
    }
}