这是内存泄漏还是假阳性？

问题描述

这是我的代码：

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.Scanner;

public class temp {
    public static void main(String[] args) throws FileNotFoundException {
        BufferedReader a = new BufferedReader(new FileReader("a"));
        Scanner scanner = new Scanner(a).useDelimiter(",");
        scanner.close();
    }
}

我在新的扫描仪（a）说（我正在用jdk1.7.0_05编译）：

I get a warning at new Scanner(a) that says (I'm compiling with jdk1.7.0_05.):

Resource leak: '<unassigned Closeable value>' is never closed.

我做错了，还是只是一个假警告？

Am I doing something wrong, or is this just a false warning?

推荐答案

如果你分开这样的代码，警告会消失吗？

If you split the code like this, will the warning go away?

  Scanner scanner = new Scanner(a);
  scanner.useDelimiter(",");
  scanner.close();

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