用JAVA如何读写文件

Question

这个!?以前有很多的帖子都是关于这的,自己找找吧!

Answer 1

import java.util.*;
import java.io.*;public class WriteText{
 public static void main(String[] args){
  try{
  PrintWriter pw=new PrintWriter(new FileOutputStream("Answer.txt"));
       System.out.println(i);
       pw.print("12121212 ");
                   
       pw.flush();
                     
    }                                                                            
   catch(FileNotFoundException e)                                                
   {                                                                             
    System.out.println(e.getMessage());                                          
   }                                                                             
   catch(IOException e)                                                          
   {                                                                             
   System.out.println(e.getMessage());                                           
   }                                                                             
 }                                                                               
}                                                             
在该文件的相同目录下建立Answer.txt文件，运行以后可以将"12121212"写入该文件