字符串与字符串数组元素之间的比较

下面的Ankush对我来说很好,请确保您对这段代码使用相同的大小写。如果要匹配任何案例,请使用 等信号情况 而不是 等于

package com.java;

import java.util.Scanner;

public class Test {

    static void check() {
        String day;
        String[] week = new String[] { "mon", "tues", "wed", "thurs", "fri", "sat", "sun" };

        Scanner sc = new Scanner(System.in);

        day = sc.nextLine();

        for (int i = 0; i < 7; i++) {
            if (day.equals(week[i])) {
                System.out.println("break");
                break;
            }
        }

        sc.close();
    }

    public static void main(String args[]) {
        Test.check();
    }
}

当您使用 scanner.nextLine() 您读取的内容超过了输入的字符串。您也在阅读EOL。尝试对此进行调试,并查看“day”变量中实际包含的字符串。

您可能只想从扫描器中读取一个单词,但在这之后,您需要清除输入末尾键入的新行字符,方法是按Enter键:

int t,w;
String day;
String[] week = new String[] {"mon","tues","wed","thurs","fri","sat","sun"};

 . . . 

day = sc.next();
 . . 
for (i = 0; i < week.length; i++) {
    if(day.equalsIgnoreCase(week[i])) {
        break;
    }
}
sc.nextLine(); // here you get rid of remaining new line character
sc.close();