[Java]PDFBoxでPDFを結合する

package com.example;

import org.apache.pdfbox.io.MemoryUsageSetting;
import org.apache.pdfbox.multipdf.PDFMergerUtility;
import org.apache.pdfbox.pdmodel.PDDocument;

import java.io.File;
import java.io.IOException;

public class PDFBoxExample {

    public static void main(String[] args) throws IOException {
        try (PDDocument pdDocument = new PDDocument()) {
            PDFMergerUtility merger = new PDFMergerUtility();
            merger.addSource(new File("blank1.pdf"));
            merger.addSource(new File("blank2.pdf"));
            merger.setDestinationFileName("merged.pdf");
            merger.mergeDocuments(MemoryUsageSetting.setupTempFileOnly());
        }
    }

}