原文: https://howtodoinjava.com/java/io/how-to-read-file-in-java-bufferedreader-example/
如果要使用BufferedReader
在 Java 中读取文件,请使用以下代码作为模板,并按自己的方式重复使用它。
BufferedReader
从字符输入流中读取文本,缓冲字符,以便有效读取字符,数组和行。
1)使用不带try-with-resources
的BufferedReader
(在 Java 7 之前)
package com.howtodoinjava.examples.io;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
public class BufferedReaderExample
{
public static void main(String[] args)
{
BufferedReader bufferedReader = null;
try
{
String currLine;
bufferedReader = new BufferedReader(new FileReader("C:\\temp\\testOut.txt"));
while ((currLine = bufferedReader.readLine()) != null)
{
System.out.println(currLine);
}
}
catch (IOException e)
{
e.printStackTrace();
}
finally
{
try
{
if (bufferedReader != null)
bufferedReader.close();
}
catch (IOException ex)
{
ex.printStackTrace();
}
}
}
}
2)将BufferedReader
与try-with-resources
一起使用(Java 7 及更高版本)
package com.howtodoinjava.examples.io;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
public class BufferedReaderExample
{
public static void main(String[] args)
{
try (BufferedReader bufferedReader = new BufferedReader(new FileReader("C:\\temp\\testOut.txt")))
{
String currLine;
while ((currLine = bufferedReader.readLine()) != null)
{
System.out.println(currLine);
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
祝您学习愉快!