0_0_22862283_18883\Main.java:1: 错误: 需要class, interface或enum ^ 0_0_22862283_18883\Main.java:1: 错误: 需要class, interface或enum ^ 0_0_22862283_18883\Main.java:15: 错误: 需要')' if (a.charAt(a.length() - 1) == '1' ^ 3 个错误