Question

java 怎么将一个list集合插入到一个文本文件中

Answer 1

//输入文件
File inFile = new File("paiming.txt");
FileReader fileReader = new FileReader(inFile);
BufferedReader bufferedReader = new BufferedReader(fileReader);
//输出文件
File outFile = new File("aa.txt");
FileWriter fileWriter = new FileWriter(outFile,true);
BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
bufferedWriter.newLine();
String str = null;
while((str=bufferedReader.readLine())!=null){
bufferedWriter.write(str);
bufferedWriter.newLine();
bufferedWriter.flush();
}
//关闭输入输出流
bufferedReader.close();fileReader.close();
bufferedWriter.close();fileWriter.close();

//删除原输入文件
inFile.delete();
//输出文件改名
outFile.renameTo(new File("paiming.txt"));