关闭DataInputStream也会关闭FileInputStream吗? [英] Will closing a DataInputStream also close the FileInputStream?

问题描述

FileInputStream fstream = new FileInputStream(someFile.getPath());
DataInputStream in = new DataInputStream(fstream);

如果我呼叫in.close()，它还会关闭fstream吗?我的代码给出了GC异常，如下所示:

If i call in.close(), will it also close fstream ? My code is giving GC Exception as follows:

java.lang.OutOfMemoryError:超出了GC开销限制

推荐答案

是的，DataInputStream.close()也会关闭您的FileInputStream.

这是因为DataInputStream继承了FilterInputStream，它具有close()方法的以下实现:

This is because DataInputStream inherits FilterInputStream which has the following implementation of the close() method:

    public void close() throws IOException {
        in.close();
    }

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