Java 实例 _ 向文件中追加数据

Java 实例 Java 实例

以下实例演示了使用 filewriter 方法向文件中追加数据:

Main.java 文件

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

Java 实例 Java 实例

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