java - 创建文件不写入java

Question

这个问题已经有答案了:

How to read from user's input in Java and write it to a file (2 个回答)

已关闭 7 年前。

public static void main(String[] args) throws FileNotFoundException {

        @SuppressWarnings("unused")
        Scanner in = new Scanner(System.in);
        System.out.println("enter filename");
        Filename=in.next();
        PrintWriter outputFile  =new PrintWriter(Filename);
        outputFile.println();
        outputFile.close();
        getInput();
        display();

    }

    public static void display() throws FileNotFoundException{
        for (int i = 0; i < genders.length; i++) {
            System.out.println(ages[i]+";"+genders[i]+";"+emails[i]+";"+salaries[i]);
    }}


    public static void getInput(){

        System.out.print("How many users do you wish to enter: ");
        int num = in.nextInt();
        ages= new int[num];
        genders = new String[num];
        emails = new String[num];
        salaries = new double[num];

        for (int i = 0; i < num; i++) {
            System.out.print("Please enter your age for person "+(i+1)+": ");
            ages[i] = in.nextInt();
            while (ages[i]<20 ||ages[i]>30){
                System.out.println("invalid age please re enter again");
                ages[i] = in.nextInt();}
            in.nextLine();

嘿伙计们，我正在尝试将用户输入的内容写入文件中。我的问题是它创建文件但不写入它。我尝试了各种方法但没有任何帮助？

Answer 1

    Filename=in.next();
    PrintWriter outputFile  =new PrintWriter(Filename);
    outputFile.println();

我认为您正在使用用户输入的名称创建文件，并向其中打印一个空行