例子
以下示例显示java.io.BufferedReader.close()方法的用法。
package com.jc2182;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class BufferedReaderDemo {
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("c:/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();
}
}
}
假设我们有一个文本文件c:/test.txt ,其内容如下。该文件将用作示例程序的输入-
ABCDEFGHIJKLMNOPQRSTUVWXYZ
让我们编译并运行以上程序,这将产生以下结果-
IOException: The buffered reader is closed