Java中BufferedReader类的close()方法用于关闭流并释放与流操作关联的所有系统资源。
用法:
public void close() throws IOException
参数:此方法不接受任何参数。
返回值:此方法不返回任何值。
异常:如果发生I /O错误,则此方法将引发IOException。
以下示例程序旨在说明IO包中BufferedReader类中的close()方法:
程序1:假设存在文件“c:/demo.txt”。
// Java program to illustrate
// BufferedReader close() method
import java.io.*;
public class GFG {
public static void main(String[] args)
throws IOException
{
// Read stream file 'demo.txt'
// containing text "GEEKSFORGEEKS"
FileReader fileReader
= new FileReader(
"c:/demo.txt");
// Convert fileReader to
// bufferedReader
BufferedReader buffReader
= new BufferedReader(
fileReader);
// Call read() method
while (buffReader.ready()) {
System.out.print(
(char)buffReader.read());
}
// Call close() method
buffReader.close();
}
}
输入:
输出:
程序2:假设存在文件“c:/demo.txt”。
// Java program to illustrate
// BufferedReader close() method
import java.io.*;
public class GFG {
public static void main(String[] args)
throws IOException
{
try {
// Read stream file 'demo.txt'
// containing text "GEEKSFORGEEKS"
FileReader fileReader
= new FileReader(
"c:/demo.txt");
// Convert fileReader to
// bufferedReader
BufferedReader buffReader
= new BufferedReader(
fileReader);
// Call close() method
buffReader.close();
// Call read() method
System.out.print(
(char)buffReader.read());
}
catch (IOException e) {
// Exception is thrown
System.out.println(
"BufferedReader is closed");
}
}
}
输入:
输出:
参考:https://docs.oracle.com/javase/7/docs/api/java/io/BufferedReader.html#close()
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注:本文由纯净天空筛选整理自pp_pankaj大神的英文原创作品 BufferedReader close() method in Java with Examples。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。