Java BufferedReader close()方法

java.io.BufferedInputStream.close() 关闭输入流并释放与该流关联的任何系统资源。

1 语法

public void close()

2 参数

无

3 返回值

无

4 示例 

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * java.io.BufferedInputStream.close()方法的例子
 */
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

public class Demo {
    public static void main(String[] args) throws Exception {
        InputStream is = null;
        InputStreamReader isr = null;
        BufferedReader br = null;

        try {
            // open input stream test.txt for reading purpose.
            is = new FileInputStream("d:/test.txt");

            // create new input stream reader
            isr = new InputStreamReader(is);

            // create new buffered reader
            br = new BufferedReader(isr);

            // releases any system resources associated with reader
            br.close();

            // creates error
            br.read();

        } catch(IOException e) {
            // IO error
            System.out.println("The buffered reader is closed");
        } finally {
            // releases any system resources associated
            if(is!=null)
                is.close();
            if(isr!=null)
                isr.close();
            if(br!=null)
                br.close();
        }
    }
}

假设test.txt内容如下：

ABCDEFGHIJKLMNOPQRSTUVWXYZ

输出结果为：

The buffered reader is closed