如何在Java中填充字符串？

public class StringPadding {
    public static void main(String[] args) {
        String originalString = "Java";
        int targetLength = 10;

        String paddedString = String.format("%" + targetLength + "s", originalString);
        System.out.println(paddedString);
    }
}

public class StringPadding {
    public static void main(String[] args) {
        String originalString = "Java";
        int targetLength = 10;

        StringBuilder sb = new StringBuilder(originalString);
        while (sb.length()< targetLength) {
            sb.append(' ');
        }

        String paddedString = sb.toString();
        System.out.println(paddedString);
    }
}