finalizerdaemon

public class ResourceHolder {
    private File file;

    public ResourceHolder(String filePath) {
        this.file = new File(filePath);
    }

    @Override
    protected void finalize() throws Throwable {
        try {
            if (file != null) {
                file.delete();
            }
        } finally {
            super.finalize();
        }
    }
}

public class ResourceHolder implements AutoCloseable {
    private File file;

    public ResourceHolder(String filePath) {
        this.file = new File(filePath);
    }

    @Override
    public void close() {
        if (file != null) {
            file.delete();
        }
    }

    // 使用 try-with-resources 确保资源被正确关闭
    public static void main(String[] args) {
        try (ResourceHolder holder = new ResourceHolder("example.txt")) {
            // 使用 holder 对象
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}