Java IO Learning Basics of Read and write text files

Java IO operations are based on the flow of operations, in order to improve the reading and writing efficiency generally need to buffer.

The simple example program is as follows:

/**
* read out the contents of 1.txt, write to 2.txt
*
*/

Import java.io.*;

public class readwritefile{
public static void Main (string[] args) {
try{

File Read = new file ("C:\\1.txt");
File Write = new file ("C:\\2.txt");

BufferedReader br = new BufferedReader (
New FileReader (read));
BufferedWriter bw = new BufferedWriter (
New FileWriter (write));
String temp = null;
temp = Br.readline ();
while (temp!= null) {
Write a file
Bw.write (temp + "\ r \ n"); Only Windows systems available
Continue reading files
temp = Br.readline ();
}

Bw.close ();
Br.close ();

}catch (FileNotFoundException e) {//File not found
System.out.println (e);
}catch (IOException e) {
System.out.println (e);
}
}
}