如何在 java 中维护日志文件

How to mainain log file in java

我想在同一个文件中每次执行后存储(追加)我的 java 代码的输出。比如包括 SOP 语句、执行时间、执行的文件数等。

试试这个:

try(FileWriter fw = new FileWriter("outfilename", true);
    BufferedWriter bw = new BufferedWriter(fw);
    PrintWriter out = new PrintWriter(bw))
{
    out.println("the text"); // appends text
    //more code
    out.println("more text"); // appends text
    //more code, append more text etc.

} catch (IOException e) {
    //exception handling left as an exercise for the reader
}