我需要创建一个基本程序来将文本输入到 .txt 文档中，所以我创建了这个程序，但我不明白为什么程序第一次运行时会跳过第一个问题。
如果设置循环的第一个问题不存在，则不会发生。另外，当我想要它做的只是添加到它时，如何阻止它覆盖 txt 文档中已经存在的内容。
到目前为止，最后一种方法似乎很有效，但我想我仍然会包括它。
package productfile;
import java.io.*;
import java.util.Scanner;
/**
*
* @author Mp
*/
public class Products {
public void inputDetails(){
int i=0;
int count=0;
String name;
String description;
String price;
Scanner sc = new Scanner(System.in);
System.out.println("How many products would you like to enter?");
count = sc.nextInt();
do{
try{
FileWriter fw = new FileWriter("c:/Users/Mp/test.txt");
PrintWriter pw = new PrintWriter (fw);
System.out.println("Please enter the product name.");
name = sc.nextLine();
pw.println("Product name: " + name );
System.out.println("Please enter the product description.");
description = sc.nextLine();
pw.println("Product description: " + description );
System.out.println("Please enter the product price.");
price = sc.nextLine();
pw.println("Product price: " + price );
pw.flush();
pw.close();
i++;
}catch (IOException e){
System.err.println("We have had an input/output error:");
System.err.println(e.getMessage());
}
} while (i<count);
}
public void display(){
String textLine;
try{
FileReader fr = new FileReader("c:/Users/Mp/test.txt");
BufferedReader br = new BufferedReader(fr);
do{
textLine = br.readLine();
if (textLine == null){
return;
} else {
System.out.println(textLine);
}
} while (textLine != null);
}catch(IOException e){
System.err.println("We have had an input/output error:");
System.err.println(e.getMessage());
}
}
}