Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlValue;
import javax.xml.bind.annotation.adapters.XmlAdapter;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;

public class Main {
    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance(Root.class);
        Unmarshaller unmarshaller = jc.createUnmarshaller();
        File xml = new File("input.xml");
        Root root = (Root) unmarshaller.unmarshal(xml);

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(root, System.out);
    }

    @XmlRootElement
    public static class Root {

        private int[][] matrix;

        @XmlJavaTypeAdapter(MatrixAdapter.class)
        public int[][] getMatrix() {
            return matrix;
        }

        public void setMatrix(int[][] matrix) {
            this.matrix = matrix;
        }
    }

    public static class MatrixAdapter extends XmlAdapter<MatrixAdapter.AdaptedMatrix, int[][]> {
        public static class AdaptedMatrix {
            @XmlElement(name = "row")
            public List<AdaptedRow> rows;
        }

        public static class AdaptedRow {
            @XmlValue
            public int[] row;
        }

        @Override
        public AdaptedMatrix marshal(int[][] matrix) throws Exception {
            AdaptedMatrix adaptedMatrix = new AdaptedMatrix();
            adaptedMatrix.rows = new ArrayList<AdaptedRow>(matrix.length);
            for (int[] row : matrix) {
                AdaptedRow adaptedRow = new AdaptedRow();
                adaptedRow.row = row;
                adaptedMatrix.rows.add(adaptedRow);
            }
            return adaptedMatrix;
        }

        @Override
        public int[][] unmarshal(AdaptedMatrix adaptedMatrix) throws Exception {
            List<AdaptedRow> adaptedRows = adaptedMatrix.rows;
            int[][] matrix = new int[adaptedRows.size()][];
            for (int x = 0; x < adaptedRows.size(); x++) {
                matrix[x] = adaptedRows.get(x).row;
            }
            return matrix;
        }
    }
}