1 package syj; 2 import java.io.*; 3 public class syj4 { 4 public static void main(String[] args) { 5 // TODO 自动生成的方法存根 6 File file = new File("data.txt"); 7 String syj = "12345abcdef@#%&*软件工程 "; 8 try { 9 FileWriter t = new FileWriter (file); 10 BufferedWriter out = new BufferedWriter (t); 11 out.write(syj); 12 out.close(); 13 t.close(); 14 } catch (Exception e) { 15 e.printStackTrace(); 16 } 17 try { 18 FileReader fr = new FileReader(file); 19 BufferedReader in = new BufferedReader(fr); 20 String ss = in.readLine(); 21 System.out.println("文件中的信息是:"+ ss); 22 in.close(); 23 fr.close(); 24 }catch (Exception e) { 25 e.printStackTrace(); 26 } 27 } 28 29 }