createfile.java

java I/0流的代码程序

import java.io.*;
public class CreateFile
{
  String file_name;
  String expand_name;
  File file;
  public CreateFile()
  {
    BufferedReader b = new BufferedReader(new InputStreamReader(System.in));
    System.out.println("Please Enter the file name:");
    try{
        file_name = b.readLine();
     }catch(IOException e){}
    if(file_name!=null){
      System.out.println("Please Enter the file expand name:");
      try{
          expand_name = b.readLine();
       }catch(IOException e){}
    }
    else return;
    try{
        file = new File(file_name+"."+expand_name);
        file.createNewFile();
     }catch(IOException e){System.out.print("a");}
  }
  public static void main(String[] argv)
  {
    CreateFile creatFile = new CreateFile();
  }
}