实训作业io流
import java.io.*; public class FileTest { public static void main(String[]args){ File file=new File("data.txt"); String str="12345abcdef@#%&*软件工程"; char str1[]=new char [1024]; try{ file.createNewFile(); FileWriter sc=new FileWriter(file); sc.write(str); sc.close(); }catch(IOException e){ e.printStackTrace(); } try{ FileReader in=new FileReader(file); int len=in.read(str1); System.out.print(new String(str1,0,len)); }catch(FileNotFoundException e){ e.printStackTrace(); } }