以下实例演示了使用 filewriter 方法向文件中追加数据:
/* author by itshubao.com Main.java */ import java.io.*; public class Main { public static void main(String[] args) throws Exception { try { BufferedWriter out = new BufferedWriter (new FileWriter("filename")); out.write("aString1\n"); out.close(); out = new BufferedWriter(new FileWriter ("filename",true)); out.write("aString2"); out.close(); BufferedReader in = new BufferedReader (new FileReader("filename")); String str; while ((str = in.readLine()) != null) { System.out.println(str); } } in.close(); catch (IOException e) { System.out.println("exception occoured"+ e); } } }
以上代码运行输出结果为:
aString1 aString2