我需要用 try/catch/finally 块包围 fileInputStream.close 吗？它是如何完成的？

我有以下 Java 类，它做一件事，从config.properties.

当到了关闭的时候fileInputStream，我想我在维基百科上读到，将它放在finally块中是很好的。因为它确实在 try/catch 块中工作得很好。

你能告诉我更正吗fileInputStream.close()在最后部分？

配置属性.java 封装底座；

import java.io.FileInputStream;
import java.util.Properties;

public class ConfigProperties {

    public FileInputStream fileInputStream;
    public String property;

    public String getConfigProperties(String strProperty) {

        Properties configProperties = new Properties();
        try {

            fileInputStream = new FileInputStream("resources/config.properties");
            configProperties.load(fileInputStream);
            property = configProperties.getProperty(strProperty);
            System.out.println("getConfigProperties(" + strProperty + ")");

            // use a finally block to close your Stream.
            // If an exception occurs, do you want the application to shut down?

        } catch (Exception ex) {
            // TODO
            System.out.println("Exception: " + ex);
        }
        finally {
            fileInputStream.close();
        }

        return property;
    }
}

解决方案是否只能按照 Eclipse 的建议并在finally 块中执行此操作？

finally {
    try {
        fileInputStream.close();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

是的，这是 Java 7 之前的常见解决方案。然而，随着 Java 7 的推出，现在有try-带资源语句将自动关闭任何声明的资源try阻止退出：

try (FileInputStream fileIn = ...) {
    // do something
} // fileIn is closed
catch (IOException e) {
    //handle exception
}