将StringBuffer转换为PDF文件

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfWriter;

import java.io.FileOutputStream;

public class StringBufferToPDF {
    public static void main(String[] args) {
        StringBuffer stringBuffer = new StringBuffer();
        stringBuffer.append("Hello, World!");

        Document document = new Document();
        try {
            PdfWriter.getInstance(document, new FileOutputStream("output.pdf"));
            document.open();
            document.add(new Paragraph(stringBuffer.toString()));
            document.close();
            System.out.println("PDF file created successfully.");
        } catch (DocumentException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}