获取引号之间的字符串

Question

import java.io.File; 
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Scanner;

public class excersie2
{
    @SuppressWarnings("resource")
    public static void main(String[] args) throws FileNotFoundException
    {

    ArrayList<String> titles = new ArrayList<String>();
    ArrayList<String> titlestwo = new ArrayList<String>();

    String path = "C:\Users\T-450s\Desktop\showtimes.txt";
    File showtimes = new File(path);

    Scanner fileReader = new Scanner(showtimes);

    PrintWriter writer = new PrintWriter("C:\Users\T-450s\Desktop\output.txt");
    while(fileReader.hasNextLine())
    {
        titles.add(fileReader.nextLine()); 
    }

    String movie = "";
    for(String title : titles)
    {
        movie = title.substring((title.indexOf("\"")+1), title.lastIndexOf("\"")); 
    }

    writer.println("\n" + movie);
    writer.close();
}
}

读取以下 txt 文件：

Now Showing

Title: "Deadpool"

Duration: 1 hr 48 mins

Title: "Zoolander"

Duration: 1 hr 42 mins

Title: "Kung Fu Panda 3"

Duration: 1 hr 35 mins

and writes a new file containing:

Deadpool

Zoolaner

Kung Fu Panda 3

我该如何实现？我尝试使用子字符串，但每次都出错。

Answer 1

我不确定这是否是您收到的错误，但我认为是，我认为您收到错误是因为子字符串试图找到 " 但在某些行上找不到，因为它没有存在并且会导致错误，所以您可以做的是用 if 语句包围 movie = substring(... 来检查 "title" 是否包含 "，您也可以这样做 if(title.contains(" \""))应该将 writer.println 放在 for 循环

中

获取引号之间的字符串

Obtaining a String Between quotations

java

file-io

printwriter