来自 Eclipse 的 Java 尝试资源警告

Question

为什么对于 Eclipse 来说这是通过 try-with ARM 来管理的？

BufferedReader reader = null;
try {
  if (condition) {
    try {
      reader = method1();
    } catch (Exception e) {
      ...
    }
  }
  if (reader == null) {
    reader = method2();
  }

  do things ...
} catch(Exception e) {
  ...
} finally {
  if (reader != null) {
    reader.close();
  }
}

有更好的方法来处理这种情况吗？或者只是来自 eclipse 的垃圾警告？

此案例无效:

try (BufferedReader reader = null) {
  if (condition) {
    reader = method1();
  } else {
    reader = method2();
  }

  do things ...
}

Answer 1

尝试:

try (BufferedReader reader = createBufferedReader(condition)) {
  do things ...
}

private BufferedReader createBufferedReader(boolean condition){
  if (condition) {
    return method1();
  } else {
    return method2();
  }
}