javaclose_JavaPushbackReaderclose()方法

Java PushbackReader close()方法

java.io.PushbackReader.close() 方法关闭该流并释放与之关联的所有系统资源。一旦流已关闭&＃xff0c;进一步的read(), unread(), ready(), 或skip() 调用将抛出IOException。

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&＃xff1a; http://www.yiidian.com

*/

/**

* java.io.PushbackReader.close()方法的例子

*/

import java.io.*;

public class Demo {

public static void main(String[] args) {

String s &＃61; "Hello World";

// create a new StringReader

StringReader sr &＃61; new StringReader(s);

// create a new PushBack reader based on our string reader

PushbackReader pr &＃61; new PushbackReader(sr, 20);

try {

// read the first five chars

for (int i &＃61; 0; i <5; i&＃43;&＃43;) {

char c &＃61; (char) pr.read();

System.out.print("" &＃43; c);

}

// change line

System.out.println();

System.out.println("Closing stream...");

// close the stream

pr.close();

System.out.println("Stream closed.");

} catch (IOException ex) {

ex.printStackTrace();

}

}

}

输出结果为&＃xff1a;

Hello

Closing stream...

Stream closed.