获取当前类的名称，并使用该名称创建一个txt [英] Get the name of the current class and create a txt with that name

问题描述

特别是我需要该程序来创建文本文件.文本文件的名称为类名称.
我试过了，但不起作用:

Especially I need the program to create a text file. The name of the text file to be the class name.
I tried this but does not work:

String className = this.getClass().getName();
File file = new File("C:\\" + className + ".txt");

推荐答案

尽管您正在创建File对象，但是您并没有要求它在文件系统中创建它.

Although you are creating a File object, you are not telling it to create it in the filesystem.

String className = this.getClass().getSimpleName();

String fileName = String.format("%s.txt", className);

try {
    new File(fileName).createNewFile();
} catch (IOException e) {
    throw new RuntimeException(String.format("Error creating new file '%s'", fileName), e);
}

我还认为您可能想使用getSimpleName而不是getName. getName会为您提供完整的程序包和类名(com.package.ClassName)，而getSimpleName只会为您提供类名(ClassName)

I also think you might want to use getSimpleName instead of getName. getName will get you the entire package and class name (com.package.ClassName) whereas getSimpleName will just get the class name (ClassName)

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