Java String[]에 원하는 문자가 있는지 확인

Arrays.asList 이용

String[] array = {"apple", "banana", "cherry"};
String valueToCheck = "banana";

boolean isIncluded = Arrays.asList(array).contains(valueToCheck);

if (isIncluded) {
    System.out.println(valueToCheck + " is in the array.");
} else {
    System.out.println(valueToCheck + " is not in the array.");
}

for문 이용

String[] array = {"apple", "banana", "cherry"};
String valueToCheck = "banana";
boolean isIncluded = false;

for (String s : array) {
    if (s.equals(valueToCheck)) {
        isIncluded = true;
        break;
    }
}

if (isIncluded) {
    System.out.println(valueToCheck + " is in the array.");
} else {
    System.out.println(valueToCheck + " is not in the array.");
}

Arrays.stream 이용

import java.util.Arrays;

String[] array = {"apple", "banana", "cherry"};
String valueToCheck = "banana";

boolean isIncluded = Arrays.stream(array).anyMatch(valueToCheck::equals);

if (isIncluded) {
    System.out.println(valueToCheck + " is in the array.");
} else {
    System.out.println(valueToCheck + " is not in the array.");
}