Java数字转意大利语字符串问题：为何仅输出"due"而非全部列表

Hey there! Let's get your program to print the full list of Italian numbers instead of just "due". Here's what's going on and how to fix it:

What's Causing the Issue #

Right now, your main method only targets the number 2 and calls numberM(num) once. That's why you're only seeing "due" — the program isn't looping through all the numbers you want to output.

Solution 1: Iterate Through the Enum (Cleanest Approach) #

Since you already have an enum NumberInWords that contains all your target words, you can directly loop through its values to print everything:

public static void main(String[] args) {
    // Loop through every value in the NumberInWords enum
    for (NumberInWords number : NumberInWords.values()) {
        System.out.println(number);
    }
}

This will output all five words in order without having to handle index math at all.

Solution 2: Use Your convertNumberToString Method #

If you want to use the string array-based method you wrote, update your main method to loop from 1 to 5 and call convertNumberToString each time:

public static void main(String[] args) {
    // Loop through numbers 1 to 5 and convert each to its Italian word
    for (int i = 1; i <= 5; i++) {
        convertNumberToString(i);
    }
}

Bonus: Simplify Your convertNumberToString Method #

You can also clean up that method — the entire chain of if-else checks is redundant, since you're already pulling the value directly from the array. Here's the simplified version:

public static String convertNumberToString(Integer i) {
    String[] ItNums = { "", "uno", "due", "tres", "quattro", "clinque" };
    String myString = ItNums[i];
    System.out.println(myString);
    return myString;
}

Either solution will make your program output the full list: uno, due, tres, quattro, clinque.

内容的提问来源于stack exchange，提问作者Ryan Clarke