1. Application of the file output stream.
String is defined as follows:
String str = "12345abcdef @ #% & * Software Engineering";
programming the string to the file "data.txt".
package homework;
import java.io. *;
public class IO {
public static void main(String[] args) throws IOException{
STE = String "12345abcdef @ #% & * Software Engineering";
File f1=new File("C:\\Users\\WIN10\\Desktop\\data.txt");
f1.createNewFile();
System.out.println("名称"+f1.getName());
FileWriter fy=new FileWriter(f1);
BufferedWriter fw=new BufferedWriter(fy);
fw.write(ste);
fw.close();
fy.close();
}
}
2. The application file input stream.
Modify the program title in the first, reading a file "data.txt", the read data output in the console.
package homework;
import java.io.*;
public class readFile {
public static void main(String[] args) throws IOException {
String ss;
File f1=new File("C:\Users\WIN10\Desktop\data.txt");
FileReader fw=new FileReader(f1);
BufferedReader fy=new BufferedReader(fw);
while((ss=fy.readLine())!=null){
System.out.println(ss);
}
fy.close();
fw.close();
}
}
3. The training of talk about experience
Variable data objects, etc. are temporarily after the end of the program will be lost, and I / O technology can save data to a text file, to master the process technology can improve their ability to handle the data. But to skilled also requires a lot of practice, so we need more efforts themselves to the