Java txt 解析器

Question

我正在尝试编写一个java程序来打开一个包含文本段落的.txt文件。然后我想将特定的句子解析到文件中。具体来说“应该有声明。例如:

测试.txt

Hello all. Here is a a packing list. You should have a toothbrush. You should have a Phone charger. And you definitely should have your wallet.

目标输出:

Should have a toothbrush. Should have a phone charger. Should have your wallet.

现在我的文件选择器工作正常。现在我只是想分解各个句子，然后我可以回去添加“应该有逻辑”。现在程序正在识别不同的句子，但只是不断重印完整的段落。任何帮助我解决这个问题的帮助将不胜感激。

import java.io.File;
import java.util.Scanner;
import javax.swing.JFileChooser;

public class PickAFile {
@SuppressWarnings("resource")
public static void main(String[] args) {
    JFileChooser chooser = new JFileChooser();

    int returnVal = chooser.showOpenDialog(null);
    if (returnVal == JFileChooser.APPROVE_OPTION) {

        try {
            System.out.println("You chose to open this file: " +      chooser.getSelectedFile().getName());

            Scanner input = new Scanner(System.in);

            File file = new File(chooser.getSelectedFile().getName());

            input = new Scanner(file);

            while (input.hasNextLine()) {
                String message = input.nextLine();
                String[] sentences = message.split("(?<=[.!?])\\s* ");
                for (String s : sentences) {
                    System.out.println(message);
                }
            }

            input.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}
}  

输出:

You chose to open this file: test.txt Hello all. Here is a a packing list. You should have a toothbrush. You should have a Phone charger. And you definitely should have your wallet.

Hello all. Here is a a packing list. You should have a toothbrush. You should have a Phone charger. And you definitely should have your wallet.

Hello all. Here is a a packing list. You should have a toothbrush. You should have a Phone charger. And you definitely should have your wallet.

Hello all. Here is a a packing list. You should have a toothbrush. You should have a Phone charger. And you definitely should have your wallet.

Hello all. Here is a a packing list. You should have a toothbrush. You should have a Phone charger. And you definitely should have your wallet.

Answer 1

        while (input.hasNextLine()) {
            String message = input.nextLine();
            String[] sentences = message.split("(?<=[.!?])\\s* ");
            List<String> shouldHaves = new ArrayList<String>();
                for (String s : sentences) {
                  if (s.contains("should have"))
                    shouldHaves.add(s);
                }
                for (String s : shouldHaves) {
                  System.out.println(s);
                }
        }