try {
                if (item == null || item.getId() != oldItem.getId() || !item.isUpdated()) {
                    writer.write(oldItem.toLineString());
                    writer.write(Constants.LINE_SEPARATOR);
                    return oldItem;
                }
                if (!item.equals(oldItem)) {
                    throw new DictionaryException("Mapping file was updated: old=" + oldItem + " : new=" + item);

 * the License.
 */

package com.google.common.io;

import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.StandardSystemProperty.LINE_SEPARATOR;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.io.BufferedWriter;

            try {
                if (item == null || item.getId() != oldItem.getId() || !item.isUpdated()) {
                    writer.write(oldItem.toLineString());
                    writer.write(Constants.LINE_SEPARATOR);
                    return oldItem;
                }
                if (!item.equals(oldItem)) {
                    throw new DictionaryException("Protwords file was updated: old=" + oldItem + " : new=" + item);

public class SystemUtilTest {

    /**
     * @throws Exception
     */
    @Test
    public void test() throws Exception {
        System.out.println(SystemUtil.FILE_ENCODING);
        System.out.println(SystemUtil.LINE_SEPARATOR);
        System.out.println(SystemUtil.PATH_SEPARATOR);
        System.out.println(SystemUtil.OS_NAME);
        System.out.println(SystemUtil.JAVA_IO_TMPDIR);
        System.out.println(SystemUtil.USER_DIR);

            try {
                if (item == null || item.getId() != oldItem.getId() || !item.isUpdated()) {
                    writer.write(oldItem.toLineString());
                    writer.write(Constants.LINE_SEPARATOR);
                    return oldItem;
                }
                if (!item.equals(oldItem)) {
                    throw new DictionaryException("Kuromoji file was updated: old=" + oldItem + " : new=" + item);

            try {
                if (item == null || item.getId() != oldItem.getId() || !item.isUpdated()) {
                    writer.write(oldItem.toLineString());
                    writer.write(Constants.LINE_SEPARATOR);
                    return oldItem;
                }
                if (!item.equals(oldItem)) {
                    throw new DictionaryException("Stopwords file was updated: old=" + oldItem + " : new=" + item);

            try {
                if (item == null || item.getId() != oldItem.getId() || !item.isUpdated()) {
                    writer.write(oldItem.toLineString());
                    writer.write(Constants.LINE_SEPARATOR);
                    return oldItem;
                }
                if (!item.equals(oldItem)) {

            try {
                if (item == null || item.getId() != oldItem.getId() || !item.isUpdated()) {
                    writer.write(oldItem.toLineString());
                    writer.write(Constants.LINE_SEPARATOR);
                    return oldItem;
                }
                if (!item.equals(oldItem)) {
                    throw new DictionaryException("Synonym file was updated: old=" + oldItem + " : new=" + item);

    /**
     * <code>line.separator</code> system property. For example, on Mac OS X: <code>"\n"</code>
     */
    public static final String LINE_SEPARATOR = System.getProperty("line.separator");

    /**
     * <code>path.separator</code> system property. For example, on Mac OS X: <code>":"</code>
     */

    // System and UI Constants
    // ============================================================

    /** System line separator character sequence. */
    public static final String LINE_SEPARATOR = System.lineSeparator();

    /** Default page number for admin interface pagination. */
    public static final int DEFAULT_ADMIN_PAGE_NUMBER = 1;

    /** String constant representing boolean true value. */