示例

public class ClassA { public void makeStream (File file) { try { FileInputStream stream = new FileInputStream(file); stream.read(); //do something... stream.close(); } catch (IOException e) { //stream leaked... } } }

解决方案

为了避免资源泄漏，请确保对每个 java.io.FileInputStream 都调用 close()。 注意：此规则适用于所有形式的 FileInputStream 构造函数。

public class ClassA { public void makeStream (File file) { FileInputStream stream = null; try { stream = new FileInputStream(file); stream.read(); //do something... } catch (IOException e) { //do something... } finally { if (stream != null) { try { stream.close(); } catch(IOException e) { //do something... } } } } }