JAVA给定一个字符串，分别统计其中所包含的元音的个数和空格的个数

下面是JAVA代码实现：

public class Main {
    public static void main(String[] args) {
        String str = "Hello World";
        int vowelCount = 0;
        int spaceCount = 0;
        for (int i = 0; i < str.length(); i++) {
            char c = str.charAt(i);
            if (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u' ||
                    c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U') {
                vowelCount++;
            } else if (c == ' ') {
                spaceCount++;
            }
        }
        System.out.println("Vowel count: " + vowelCount);
        System.out.println("Space count: " + spaceCount);
    }
}

输出结果为：

Vowel count: 3
Space count: 1