如何从出现的第一个空格中拆分字符串仅Java

public class SplitExample {
    public static void main(String[] args) {
        String str = "Hello World! This is a test.";
        String[] parts = str.split(" ", 2); // 使用空格作为分隔符，并限制结果数组的长度为2
        
        for (String part : parts) {
            System.out.println(part);
        }
    }
}

Hello
World! This is a test.

public class SplitExample {
    public static void main(String[] args) {
        String str = "Hello World! This is a test.";
        String[] parts = str.split(" ", 2);
        String firstPart = parts[0];
        
        System.out.println(firstPart);
    }
}

Hello