以下实例演示了使用 filewriter 方法向文件中追加数据:
/*
author by w3cschool.cc
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
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