Java String 在 Scanner 中的 Boolean.parseBoolean 之前替换多个字符串？

Question

我正在构建一个 Java 程序来跟踪用户的肠道功能。我在一个循环中有一段代码，它通过扫描仪询问用户是否有抽筋。我有以下代码工作:

String cramps = userInput.nextLine();
String replacecramps = cramps.replace("Y","true");
boolean mycramps = Boolean.parseBoolean(replacecramps);

这实际上采用“Y”答案并将其替换为“true”，然后采用字符串“true”并将其更改为 boolean 值 true(我认为 - 无论如何，它似乎是这样工作的)。但是，我想更改其他可能的常见输入，例如“y”、“yes”、“Yes”、“yeah”、“Yeah”、“yep”、“Yep”等。

有什么办法吗？我是 Java 的新手，所以事实证明这很困难。我已经阅读了这里关于它的每一篇文章，但我仍然不知道如何最好地解决这个问题。

以下是一些可能有用的代码片段:

它所在的循环分支是(如果需要我可以粘贴完整的代码，但它很长):

} else if (myBristol == 7) {
   System.out.println("You appear to have severe diarrhea. ");
    //Integrate Diarrhea.java class
    System.out.println("\nDid you experience cramps or bloating? (Y/N)");
    String cramps = userInput.nextLine();
    String replacecramps = cramps.replace("Y","true");
    boolean mycramps = Boolean.parseBoolean(replacecramps);
    System.out.println("Did you experience flatulence? (Y/N)");
    String gas = userInput.nextLine();
    String replacegas = gas.replace("Y","true");
    boolean mygas = Boolean.parseBoolean(replacegas);
    Diarrhea b = new Diarrhea(poopColor, poopSize, mycramps, mygas);
    //Print data to log file
    pw.println(b.toString());

它正在使用的子类:

public class Poop{
    protected String color;
    protected String size;

    public Poop(String poopColor, String poopSize)
    {
    color=poopColor;
    size=poopSize; 
    }
    public void setcolor(String c)
    {
        color = c;
    }
    public String getcolor(){
        return color;
    }
    public void setsize(String s)
    {
        size = s;
    }
    public String getsize(){
        return size;
    }
    @Override
    public String toString() {
        String tmp = "This poop's color was: " + this.getcolor() + ". Poop was: " + this.getsize() + ".";
        return tmp;
    }

public class Diarrhea extends Poop{
protected boolean cramps;
protected boolean gas;

public Diarrhea(String poopColor, String poopSize, boolean cramps, boolean gas) {
super(poopColor,poopSize);
this.cramps=cramps;
this.gas=gas;
}
public void setcramps(boolean mycramps) {
    cramps=mycramps;
}
public boolean getcramps(){
    return cramps;
}
public void setgas(boolean gas) {
    gas=this.gas;
}
public boolean getgas(){
    return gas;
}
@Override
public String toString() {
    String tmp = "This diarrhea's color was: " + this.getcolor() + ". Was this a little or a lot of diarrhea: " + this.getsize() + ". Did you experience cramps or bloating? (true/false) " + this.cramps + ". Did you experience flatulence? (true/false) " + this.gas + ".";
    return tmp;
}

到目前为止，这就是我处理 y/n 问题的方式，它一直很好地工作，因为它只查找 y 或 n 作为第一个字符，不关心大小写，也不关心关于其他任何事情(如错别字)。弄清楚如何让它为 boolean 值工作有点困难，但我认为我走在正确的道路上 - 但也许我正在做这一切都是错误的。

char answer1 = userInput.next().charAt(0);
    answerString = Character.toString(answer1);
    userInput.nextLine(); 
     if (answerString.equalsIgnoreCase("Y")) {
        //Integrate Poop.java class
        System.out.println("Was this a large, medium, small, or average sized bowel movement (describe size): ");
        String poopSize = userInput.nextLine();
        System.out.println("How would you describe the color of this poop (brown, greenish, light, dark, etc): ");
        String poopColor = userInput.nextLine();
        Poop a = new Poop(poopColor, poopSize);
        //Print data to log file
        pw.println(a.toString());

Answer 1

您可以像这样使用 replaceALL 和一些正则表达式:

String input = "you are saying : y yes Yes yeah Yeah yep Yep";
input = input.replaceAll("\\b(?i)y(es|eah|ep)?\\b", "true");

System.out.println(input); //you are saying : true true true true true true true

---

关于正则表达式的细节:

• \b 用于单词边界
• (?i) 不区分大小写
• y(es|eah|ep)? y 后跟 (es 或 eah 或 ep) 哪些是可选的 ?